void SYS_Init(void)
{
/*---------------------------------------------------------------------------------------------------------*/
/* Init System Clock */
/*---------------------------------------------------------------------------------------------------------*/
/* Unlock protected registers */
SYS_UnlockReg();
/* Enable External XTAL (4~24 MHz) */
CLK_EnableXtalRC(CLK_PWRCTL_HXTEN_Msk);
/* Waiting for 12MHz clock ready */
CLK_WaitClockReady( CLK_STATUS_HXTSTB_Msk);
/* Switch HCLK clock source to HXT */
CLK_SetHCLK(CLK_CLKSEL0_HCLKSEL_HXT,CLK_CLKDIV0_HCLK(1));
/* Set PLL to power down mode and PLL_STB bit in CLKSTATUS register will be cleared by hardware.*/
CLK->PLLCTL |= CLK_PLLCTL_PD_Msk;
/* Set PLL frequency */
CLK->PLLCTL = CLK_PLLCTL_84MHz_HXT;
/* Waiting for clock ready */
CLK_WaitClockReady(CLK_STATUS_PLLSTB_Msk);
/* Switch HCLK clock source to PLL */
CLK_SetHCLK(CLK_CLKSEL0_HCLKSEL_PLL,CLK_CLKDIV0_HCLK(1));
/* Enable IP clock */
CLK_EnableModuleClock(UART0_MODULE);
CLK_EnableModuleClock(TMR0_MODULE);
CLK_EnableModuleClock(SPI0_MODULE);
CLK_EnableModuleClock(SPI1_MODULE);
/* Select IP clock source */
CLK_SetModuleClock(UART0_MODULE, CLK_CLKSEL1_UARTSEL_HXT, CLK_CLKDIV0_UART(1));
CLK_SetModuleClock(TMR0_MODULE, CLK_CLKSEL1_TMR0SEL_HXT, 0);
/* Update System Core Clock */
/* User can use SystemCoreClockUpdate() to calculate SystemCoreClock. */
SystemCoreClockUpdate();
/*---------------------------------------------------------------------------------------------------------*/
/* Init I/O Multi-function */
/*---------------------------------------------------------------------------------------------------------*/
/* Set GPG multi-function pins for UART0 RXD and TXD */
SYS->GPG_MFPL = SYS_GPG_MFPL_PG1MFP_UART0_RXD | SYS_GPG_MFPL_PG2MFP_UART0_TXD ;
/* SPI0: GPE4=SS0, GPE3=MOSI0, GPE2=MISO0, GPE5=CLK */
SYS->GPE_MFPL = (SYS_GPE_MFPL_PE2MFP_SPI0_MISO0 | SYS_GPE_MFPL_PE3MFP_SPI0_MOSI0 | SYS_GPE_MFPL_PE4MFP_SPI0_SS0 | SYS_GPE_MFPL_PE5MFP_SPI0_CLK);
/* SPI1: GPC12=SS0, GPC15=MOSI0, GPD0=MISO0, GPD1=CLK */
SYS->GPC_MFPH |= (SYS_GPC_MFPH_PC12MFP_SPI1_SS0 | SYS_GPC_MFPH_PC15MFP_SPI1_MOSI0);
SYS->GPD_MFPL = (SYS_GPD_MFPL_PD0MFP_SPI1_MISO0 | SYS_GPD_MFPL_PD1MFP_SPI1_CLK);
/* Lock protected registers */
SYS_LockReg();
}
void SYS_PLL_Test(void)
{
int32_t i;
/*---------------------------------------------------------------------------------------------------------*/
/* PLL clock configuration test */
/*---------------------------------------------------------------------------------------------------------*/
printf("\n-------------------------[ Test PLL ]-----------------------------\n");
for(i = 0; i < sizeof(g_au32PllSetting) / sizeof(g_au32PllSetting[0]) ; i++)
{
/* Select HCLK clock source to HXT and HCLK source divider as 1 */
CLK->CLKSEL0 = (CLK->CLKSEL0 & (~CLK_CLKSEL0_HCLKSEL_Msk)) | CLK_CLKSEL0_HCLKSEL_HXT;
CLK->CLKDIV0 = (CLK->CLKDIV0 & (~CLK_CLKDIV0_HCLKDIV_Msk)) | CLK_CLKDIV0_HCLK(1);
/* Set PLL to power down mode and PLL_STB bit in CLKSTATUS register will be cleared by hardware. */
CLK->PLLCTL |= CLK_PLLCTL_PD_Msk;
/* Set PLL frequency */
CLK->PLLCTL = g_au32PllSetting[i];
/* Wait for PLL clock ready */
while(!(CLK->STATUS & CLK_STATUS_PLLSTB_Msk));
/* Select HCLK clock source to PLL and HCLK source divider as 2 */
CLK->CLKDIV0 = (CLK->CLKDIV0 & (~CLK_CLKDIV0_HCLKDIV_Msk)) | CLK_CLKDIV0_HCLK(2);
CLK->CLKSEL0 = (CLK->CLKSEL0 & (~CLK_CLKSEL0_HCLKSEL_Msk)) | CLK_CLKSEL0_HCLKSEL_PLL;
/* Update System Core Clock */
SystemCoreClockUpdate();
printf(" Change system clock to %d Hz ...................... ", SystemCoreClock);
/* Enable CKO clock source */
CLK->APBCLK0 |= CLK_APBCLK0_CLKOCKEN_Msk;
/* CKO = clock source / 2^(1 + 1) */
CLK->CLKOCTL = CLK_CLKOCTL_CLKOEN_Msk | (1);
/* Select CLKO clock source as HCLK */
CLK->CLKSEL1 = (CLK->CLKSEL1 & (~CLK_CLKSEL1_CLKOSEL_Msk)) | CLK_CLKSEL1_CLKOSEL_HCLK;
/* The delay loop is used to check if the CPU speed is increasing */
Delay(0x400000);
if(pi())
{
printf("[FAIL]\n");
}
else
{
printf("[OK]\n");
}
/* Disable CLKO clock */
CLK->APBCLK0 &= (~CLK_APBCLK0_CLKOCKEN_Msk);
}
}
void SYS_Init(void)
{
/*---------------------------------------------------------------------------------------------------------*/
/* Init System Clock */
/*---------------------------------------------------------------------------------------------------------*/
/* Unlock protected registers */
SYS_UnlockReg();
/* Enable External XTAL (4~24 MHz) */
CLK_EnableXtalRC(CLK_PWRCTL_HXTEN_Msk);
/* Enable LIRC */
CLK_EnableXtalRC(CLK_PWRCTL_LIRCEN_Msk);
/* Waiting for 12MHz clock ready */
CLK_WaitClockReady( CLK_STATUS_HXTSTB_Msk);
/* Waiting for LIRC clock stable */
CLK_WaitClockReady( CLK_STATUS_LIRCSTB_Msk);
/* Switch HCLK clock source to HXT */
CLK_SetHCLK(CLK_CLKSEL0_HCLKSEL_HXT,CLK_CLKDIV0_HCLK(1));
/* Set PLL to power down mode and PLL_STB bit in CLKSTATUS register will be cleared by hardware.*/
CLK->PLLCTL |= CLK_PLLCTL_PD_Msk;
/* Set PLL frequency */
CLK->PLLCTL = CLK_PLLCTL_84MHz_HXT;
/* Waiting for clock ready */
CLK_WaitClockReady(CLK_STATUS_PLLSTB_Msk);
/* Switch HCLK clock source to PLL */
CLK_SetHCLK(CLK_CLKSEL0_HCLKSEL_PLL,CLK_CLKDIV0_HCLK(1));
/* Enable IP clock */
CLK_EnableModuleClock(UART0_MODULE);
CLK_EnableModuleClock(WDT_MODULE);
/* Select IP clock source */
CLK_SetModuleClock(UART0_MODULE, CLK_CLKSEL1_UARTSEL_HXT, CLK_CLKDIV0_UART(1));
CLK_SetModuleClock(WDT_MODULE, CLK_CLKSEL1_WDTSEL_LIRC, 0);
/* Update System Core Clock */
/* User can use SystemCoreClockUpdate() to calculate SystemCoreClock. */
SystemCoreClockUpdate();
/*---------------------------------------------------------------------------------------------------------*/
/* Init I/O Multi-function */
/*---------------------------------------------------------------------------------------------------------*/
/* Set GPG multi-function pins for UART0 RXD and TXD */
SYS->GPG_MFPL = SYS_GPG_MFPL_PG1MFP_UART0_RXD | SYS_GPG_MFPL_PG2MFP_UART0_TXD ;
/* Lock protected registers */
SYS_LockReg();
}
void SYS_Init(void)
{
/*---------------------------------------------------------------------------------------------------------*/
/* Init System Clock */
/*---------------------------------------------------------------------------------------------------------*/
/* Unlock protected registers */
SYS_UnlockReg();
/* Enable External XTAL (4~24 MHz) */
CLK_EnableXtalRC(CLK_PWRCTL_HXTEN_Msk);
/* Waiting for 12MHz clock ready */
CLK_WaitClockReady( CLK_STATUS_HXTSTB_Msk);
/* Switch HCLK clock source to HXT */
CLK_SetHCLK(CLK_CLKSEL0_HCLKSEL_HXT,CLK_CLKDIV0_HCLK(1));
/* Set PLL to power down mode and PLL_STB bit in CLKSTATUS register will be cleared by hardware.*/
CLK->PLLCTL |= CLK_PLLCTL_PD_Msk;
/* Set PLL frequency */
CLK->PLLCTL = CLK_PLLCTL_84MHz_HXT;
/* Waiting for clock ready */
CLK_WaitClockReady(CLK_STATUS_PLLSTB_Msk);
/* Switch HCLK clock source to PLL */
CLK_SetHCLK(CLK_CLKSEL0_HCLKSEL_PLL,CLK_CLKDIV0_HCLK(1));
/* Enable IP clock */
CLK_EnableModuleClock(UART0_MODULE);
CLK_EnableModuleClock(TMR0_MODULE);
CLK_EnableModuleClock(SPI2_MODULE);
/* Select IP clock source */
CLK_SetModuleClock(UART0_MODULE, CLK_CLKSEL1_UARTSEL_HXT, CLK_CLKDIV0_UART(1));
CLK_SetModuleClock(TMR0_MODULE, CLK_CLKSEL1_TMR0SEL_HXT, 0);
/* Update System Core Clock */
/* User can use SystemCoreClockUpdate() to calculate SystemCoreClock. */
SystemCoreClockUpdate();
/*---------------------------------------------------------------------------------------------------------*/
/* Init I/O Multi-function */
/*---------------------------------------------------------------------------------------------------------*/
/* Set GPG multi-function pins for UART0 RXD and TXD */
SYS->GPG_MFPL = SYS_GPG_MFPL_PG1MFP_UART0_RXD | SYS_GPG_MFPL_PG2MFP_UART0_TXD ;
/* SPI2: SS0=GPH_5, MOSI0=GPH_8, MISO0=GPH_7, CLK=GPH_6, MISO1=GPH_9, MOSI11=GPH10 */
SYS->GPH_MFPL = (SYS_GPH_MFPL_PH5MFP_SPI2_SS0 | SYS_GPH_MFPL_PH6MFP_SPI2_CLK | SYS_GPH_MFPL_PH7MFP_SPI2_MISO0);
SYS->GPH_MFPH = (SYS_GPH_MFPH_PH8MFP_SPI2_MOSI0 | SYS_GPH_MFPH_PH9MFP_SPI2_MISO1 | SYS_GPH_MFPH_PH10MFP_SPI2_MOSI1);
/* Lock protected registers */
SYS_LockReg();
}
void SYS_Init(void)
{
/*---------------------------------------------------------------------------------------------------------*/
/* Init System Clock */
/*---------------------------------------------------------------------------------------------------------*/
/* Unlock protected registers */
SYS_UnlockReg();
/* Enable External XTAL (4~24 MHz) */
CLK_EnableXtalRC(CLK_PWRCON_HXT_EN_Msk);
/* Waiting for 12MHz clock ready */
CLK_WaitClockReady(CLK_CLKSTATUS_HXT_STB_Msk);
/* Switch HCLK clock source to HXT */
CLK_SetHCLK(CLK_CLKSEL0_HCLK_S_HXT,CLK_CLKDIV0_HCLK(1));
/* Set PLL to power down mode and PLL_STB bit in CLKSTATUS register will be cleared by hardware.*/
CLK->PLLCON |= CLK_PLLCON_PD_Msk;
/* Set PLL frequency */
CLK->PLLCON = PLLCON_SETTING;
/* Waiting for clock ready */
CLK_WaitClockReady(CLK_CLKSTATUS_PLL_STB_Msk);
/* Switch HCLK clock source to PLL */
CLK_SetHCLK(CLK_CLKSEL0_HCLK_S_PLL,CLK_CLKDIV0_HCLK(1));
/* Enable IP clock */
CLK_EnableModuleClock(UART0_MODULE);
CLK_EnableModuleClock(PDMA_MODULE);
/* Select IP clock source */
CLK_SetModuleClock(UART0_MODULE,CLK_CLKSEL1_UART_S_HXT,CLK_CLKDIV0_UART(1));
/* Update System Core Clock */
/* User can use SystemCoreClockUpdate() to calculate SystemCoreClock. */
SystemCoreClockUpdate();
/*---------------------------------------------------------------------------------------------------------*/
/* Init I/O Multi-function */
/*---------------------------------------------------------------------------------------------------------*/
/* Set GPG multi-function pins for UART0 RXD and TXD */
SYS->GPG_MFPL &= ~(SYS_GPG_MFPL_PG1_MFP_Msk|SYS_GPG_MFPL_PG2_MFP_Msk);
SYS->GPG_MFPL |= SYS_GPG_MFPL_PG1_MFP_UART0_RXD | SYS_GPG_MFPL_PG2_MFP_UART0_TXD ;
/* Set GPG multi-function pins for CKO */
SYS->GPC_MFPL = (SYS->GPC_MFPL & ~SYS_GPC_MFPL_PC5_MFP_Msk) | SYS_GPC_MFPL_PC5_MFP_CLK_O ;
/* Lock protected registers */
SYS_LockReg();
}
void setupSystemClock()
{
SYS_UnlockReg();
/*---------------------------------------------------------------------------------------------------------*/
/* Init System Clock */
/*---------------------------------------------------------------------------------------------------------*/
/* Enable HIRC clock */
CLK_EnableXtalRC(CLK_PWRCTL_HIRCEN_Msk);
/* Waiting for HIRC clock ready */
CLK_WaitClockReady(CLK_STATUS_HIRCSTB_Msk);
/* Switch HCLK clock source to HIRC */
CLK_SetHCLK(CLK_CLKSEL0_HCLKSEL_HIRC, CLK_CLKDIV0_HCLK(1));
/* Enable external XTAL 12MHz clock */
//CLK_EnableXtalRC(CLK_PWRCTL_HXTEN_Msk);
/* Waiting for external XTAL clock ready */
//CLK_WaitClockReady(CLK_STATUS_HXTSTB_Msk);
/* Set core clock as PLL_CLOCK from PLL and SysTick source to HCLK/2*/
CLK_SetCoreClock(SYSTEM_CLOCK);
CLK_SetSysTickClockSrc(CLK_CLKSEL0_STCLKSEL_HCLK_DIV2);
/* Waiting for PLL clock ready */
CLK_WaitClockReady(CLK_STATUS_PLLSTB_Msk);
SYS_LockReg();
}
/**
* This function will initial Clock tree.
*/
static void clock_init(void)
{
/* Unlock protected registers */
SYS_UnlockReg();
SystemInit();
/* Set XT1_OUT(PF.2) and XT1_IN(PF.3) to input mode */
PF->MODE &= ~(GPIO_MODE_MODE2_Msk | GPIO_MODE_MODE3_Msk);
/* Enable External XTAL (4~24 MHz) */
CLK_EnableXtalRC(CLK_PWRCTL_HXTEN_Msk);
/* Waiting for 12MHz clock ready */
CLK_WaitClockReady( CLK_STATUS_HXTSTB_Msk);
/* Switch HCLK clock source to HXT */
CLK_SetHCLK(CLK_CLKSEL0_HCLKSEL_HXT,CLK_CLKDIV0_HCLK(1));
/* Set core clock as PLL_CLOCK from PLL */
CLK_SetCoreClock(FREQ_192MHZ);
/* Set both PCLK0 and PCLK1 as HCLK/4 */
CLK->PCLKDIV = CLK_PCLKDIV_PCLK0DIV4 | CLK_PCLKDIV_PCLK1DIV4;
SystemCoreClockUpdate();
/* Lock protected registers */
SYS_LockReg();
}
void SYS_Init(void)
{
/*---------------------------------------------------------------------------------------------------------*/
/* Init System Clock */
/*---------------------------------------------------------------------------------------------------------*/
/* Unlock protected registers */
SYS_UnlockReg();
/* Set HCLK source form HXT and HCLK source divide 1 */
CLK_SetHCLK(CLK_CLKSEL0_HCLKSEL_HXT, CLK_CLKDIV0_HCLK(1));
/* Set HCLK frequency 42MHz */
CLK_SetCoreClock(42000000);
/* Select IP clock source */
CLK_SetModuleClock(UART0_MODULE, CLK_CLKSEL1_UARTSEL_HIRC, CLK_CLKDIV0_UART(1));
/* Enable IP clock */
CLK_EnableModuleClock(UART0_MODULE);
/* Update System Core Clock */
/* User can use SystemCoreClockUpdate() to calculate PllClock, SystemCoreClock and CycylesPerUs automatically. */
SystemCoreClockUpdate();
/*---------------------------------------------------------------------------------------------------------*/
/* Init I/O Multi-function */
/*---------------------------------------------------------------------------------------------------------*/
/* Set PD multi-function pins for UART0 RXD(PD.0) and TXD(PD.1) */
SYS->GPD_MFPL &= ~(SYS_GPD_MFPL_PD0MFP_Msk | SYS_GPD_MFPL_PD1MFP_Msk);
SYS->GPD_MFPL |= (SYS_GPD_MFPL_PD0MFP_UART0_RXD | SYS_GPD_MFPL_PD1MFP_UART0_TXD);
/* Lock protected registers */
SYS_LockReg();
}
void SYS_Init(void)
{
/*---------------------------------------------------------------------------------------------------------*/
/* Init System Clock */
/*---------------------------------------------------------------------------------------------------------*/
/* Enable HIRC clock (Internal RC 22.1184MHz) */
CLK_EnableXtalRC(CLK_PWRCTL_HIRCEN_Msk);
/* Wait for HIRC clock ready */
CLK_WaitClockReady(CLK_STATUS_HIRCSTB_Msk);
/* Select HCLK clock source as HIRC and and HCLK source divider as 1 */
CLK_SetHCLK(CLK_CLKSEL0_HCLKSEL_HIRC, CLK_CLKDIV0_HCLK(1));
/* Set PLL to Power-down mode and PLLSTB bit in CLK_STATUS register will be cleared by hardware.*/
CLK_DisablePLL();
/* Enable HXT clock (external XTAL 12MHz) */
CLK_EnableXtalRC(CLK_PWRCTL_HXTEN_Msk);
/* Wait for HXT clock ready */
CLK_WaitClockReady(CLK_STATUS_HXTSTB_Msk);
/* Set core clock as PLL_CLOCK from PLL */
CLK_SetCoreClock(PLL_CLOCK);
/* Enable UART module clock */
CLK_EnableModuleClock(UART0_MODULE);
/* Select UART module clock source as HXT and UART module clock divider as 1 */
CLK_SetModuleClock(UART0_MODULE, CLK_CLKSEL1_UARTSEL_HXT, CLK_CLKDIV0_UART(1));
/* Enable EADC module clock */
CLK_EnableModuleClock(EADC_MODULE);
/* EADC clock source is 72MHz, set divider to 8, ADC clock is 72/8 MHz */
CLK_SetModuleClock(EADC_MODULE, 0, CLK_CLKDIV0_EADC(8));
/*---------------------------------------------------------------------------------------------------------*/
/* Init I/O Multi-function */
/*---------------------------------------------------------------------------------------------------------*/
/* Set PD multi-function pins for UART0 RXD and TXD */
SYS->GPD_MFPL &= ~(SYS_GPD_MFPL_PD0MFP_Msk | SYS_GPD_MFPL_PD1MFP_Msk);
SYS->GPD_MFPL |= (SYS_GPD_MFPL_PD0MFP_UART0_RXD | SYS_GPD_MFPL_PD1MFP_UART0_TXD);
/* Configure the GPB0 - GPB3 ADC analog input pins. */
SYS->GPB_MFPL &= ~(SYS_GPB_MFPL_PB0MFP_Msk | SYS_GPB_MFPL_PB1MFP_Msk |
SYS_GPB_MFPL_PB2MFP_Msk | SYS_GPB_MFPL_PB3MFP_Msk);
SYS->GPB_MFPL |= (SYS_GPB_MFPL_PB0MFP_EADC_CH0 | SYS_GPB_MFPL_PB1MFP_EADC_CH1 |
SYS_GPB_MFPL_PB2MFP_EADC_CH2 | SYS_GPB_MFPL_PB3MFP_EADC_CH3);
/* Disable the GPB0 - GPB3 digital input path to avoid the leakage current. */
GPIO_DISABLE_DIGITAL_PATH(PB, 0xF);
}
/**
* Initializes the system.
* System control registers must be unlocked.
*/
void SYS_Init() {
// TODO: why is SYS_UnlockReg() needed? Should be already unlocked.
SYS_UnlockReg();
// HIRC clock (internal RC 22.1184MHz)
CLK_EnableXtalRC(CLK_PWRCTL_HIRCEN_Msk);
CLK_WaitClockReady(CLK_STATUS_HIRCSTB_Msk);
// HCLK clock source: HIRC, HCLK source divider: 1
CLK_SetHCLK(CLK_CLKSEL0_HCLKSEL_HIRC, CLK_CLKDIV0_HCLK(1));
// HXT clock (external XTAL 12MHz)
CLK_EnableXtalRC(CLK_PWRCTL_HXTEN_Msk);
CLK_WaitClockReady(CLK_STATUS_HXTSTB_Msk);
// Enable 72MHz optimization
FMC_EnableFreqOptimizeMode(FMC_FTCTL_OPTIMIZE_72MHZ);
// Core clock: PLL
CLK_SetCoreClock(PLL_CLOCK);
CLK_WaitClockReady(CLK_STATUS_PLLSTB_Msk);
// SPI0 clock: PCLK0
CLK_SetModuleClock(SPI0_MODULE, CLK_CLKSEL2_SPI0SEL_PCLK0, 0);
CLK_EnableModuleClock(SPI0_MODULE);
// TMR0 clock: HXT
CLK_SetModuleClock(TMR0_MODULE, CLK_CLKSEL1_TMR0SEL_HXT, 0);
CLK_EnableModuleClock(TMR0_MODULE);
// USBD clock
CLK_SetModuleClock(USBD_MODULE, 0, CLK_CLKDIV0_USB(3));
CLK_EnableModuleClock(USBD_MODULE);
// Enable USB 3.3V LDO
SYS->USBPHY = SYS_USBPHY_LDO33EN_Msk;
// EADC clock: 72Mhz / 8
CLK_SetModuleClock(EADC_MODULE, 0, CLK_CLKDIV0_EADC(8));
CLK_EnableModuleClock(EADC_MODULE);
// Enable BOD (reset, 2.2V)
SYS_EnableBOD(SYS_BODCTL_BOD_RST_EN, SYS_BODCTL_BODVL_2_2V);
// Update system core clock
SystemCoreClockUpdate();
// Initialize dataflash
Dataflash_Init();
// Initialize I/O
Display_SetupSPI();
Button_Init();
ADC_Init();
// Initialize display
Display_Init();
}
void SYS_Init(void)
{
/*---------------------------------------------------------------------------------------------------------*/
/* Init System Clock */
/*---------------------------------------------------------------------------------------------------------*/
/* Enable HIRC clock (Internal RC 22.1184MHz) */
CLK->PWRCTL |= CLK_PWRCTL_HIRCEN_Msk;
/* Wait for HIRC clock ready */
while(!(CLK->STATUS & CLK_STATUS_HIRCSTB_Msk));
/* Select HCLK clock source as HIRC and HCLK clock divider as 1 */
CLK->CLKSEL0 = (CLK->CLKSEL0 & (~CLK_CLKSEL0_HCLKSEL_Msk)) | CLK_CLKSEL0_HCLKSEL_HIRC;
CLK->CLKDIV0 = (CLK->CLKDIV0 & (~CLK_CLKDIV0_HCLKDIV_Msk)) | CLK_CLKDIV0_HCLK(1);
/* Set PLL to Power-down mode */
CLK->PLLCTL |= CLK_PLLCTL_PD_Msk;
/* Enable HXT clock (external XTAL 12MHz) */
CLK->PWRCTL |= CLK_PWRCTL_HXTEN_Msk;
/* Wait for HXT clock ready */
while(!(CLK->STATUS & CLK_STATUS_HXTSTB_Msk));
/* Set core clock as PLL_CLOCK from PLL */
CLK->PLLCTL = PLLCTL_SETTING;
while(!(CLK->STATUS & CLK_STATUS_PLLSTB_Msk));
CLK->CLKSEL0 = (CLK->CLKSEL0 & (~CLK_CLKSEL0_HCLKSEL_Msk)) | CLK_CLKSEL0_HCLKSEL_PLL;
/* Update System Core Clock */
PllClock = PLL_CLOCK; // PLL
SystemCoreClock = PLL_CLOCK / 1; // HCLK
CyclesPerUs = PLL_CLOCK / 1000000; // For CLK_SysTickDelay()
/* Enable UART module clock */
CLK->APBCLK0 |= CLK_APBCLK0_UART0CKEN_Msk;
/* Select UART module clock source as HXT and UART module clock divider as 1 */
CLK->CLKSEL1 = (CLK->CLKSEL1 & (~CLK_CLKSEL1_UARTSEL_Msk)) | CLK_CLKSEL1_UARTSEL_HXT;
CLK->CLKDIV0 = (CLK->CLKDIV0 & (~CLK_CLKDIV0_UARTDIV_Msk)) | CLK_CLKDIV0_UART(1);
/*---------------------------------------------------------------------------------------------------------*/
/* Init I/O Multi-function */
/*---------------------------------------------------------------------------------------------------------*/
/* Set PD multi-function pins for UART0 RXD(PD.0) and TXD(PD.1) */
SYS->GPD_MFPL &= ~(SYS_GPD_MFPL_PD0MFP_Msk | SYS_GPD_MFPL_PD1MFP_Msk);
SYS->GPD_MFPL |= (SYS_GPD_MFPL_PD0MFP_UART0_RXD | SYS_GPD_MFPL_PD1MFP_UART0_TXD);
/* Set PC multi-function pins for CLKO(PC.1) */
SYS->GPC_MFPL &= ~SYS_GPC_MFPL_PC1MFP_Msk;
SYS->GPC_MFPL |= SYS_GPC_MFPL_PC1MFP_CLKO;
}
void SYS_Init(void)
{
/*---------------------------------------------------------------------------------------------------------*/
/* Init System Clock */
/*---------------------------------------------------------------------------------------------------------*/
/* Enable HIRC clock (Internal RC 22.1184MHz) */
CLK->PWRCTL |= CLK_PWRCTL_HIRCEN_Msk;
/* Waiting for HIRC clock ready */
while(!(CLK->STATUS & CLK_STATUS_HIRCSTB_Msk));
/* Select HCLK clock source as HIRC and and HCLK clock divider as 1 */
CLK->CLKSEL0 &= ~CLK_CLKSEL0_HCLKSEL_Msk;
CLK->CLKSEL0 |= CLK_CLKSEL0_HCLKSEL_HIRC;
CLK->CLKDIV0 &= ~CLK_CLKDIV0_HCLKDIV_Msk;
CLK->CLKDIV0 |= CLK_CLKDIV0_HCLK(1);
/* Enable HXT clock (external XTAL 12MHz) */
CLK->PWRCTL |= CLK_PWRCTL_HXTEN_Msk;
/* Waiting for HXT clock ready */
while(!(CLK->STATUS & CLK_STATUS_HXTSTB_Msk));
/* Set core clock as PLL_CLOCK from PLL */
CLK->PLLCTL = PLLCTL_SETTING;
while(!(CLK->STATUS & CLK_STATUS_PLLSTB_Msk));
CLK->CLKSEL0 &= (~CLK_CLKSEL0_HCLKSEL_Msk);
CLK->CLKSEL0 |= CLK_CLKSEL0_HCLKSEL_PLL;
/* Update System Core Clock */
PllClock = PLL_CLOCK; // PLL
SystemCoreClock = PLL_CLOCK / 1; // HCLK
CyclesPerUs = PLL_CLOCK / 1000000; // For CLK_SysTickDelay()
/* Enable UART module clock and I2C controller */
CLK->APBCLK0 |= (CLK_APBCLK0_UART0CKEN_Msk | CLK_APBCLK0_I2C0CKEN_Msk);
/* Select UART module clock source as HXT and UART module clock divider as 1 */
CLK->CLKSEL1 &= ~CLK_CLKSEL1_UARTSEL_Msk;
CLK->CLKSEL1 |= CLK_CLKSEL1_UARTSEL_HXT;
/*---------------------------------------------------------------------------------------------------------*/
/* Init I/O Multi-function */
/*---------------------------------------------------------------------------------------------------------*/
/* Set PD multi-function pins for UART0 RXD, TXD and */
SYS->GPD_MFPL &= ~(SYS_GPD_MFPL_PD0MFP_Msk | SYS_GPD_MFPL_PD1MFP_Msk);
SYS->GPD_MFPL |= (SYS_GPD_MFPL_PD0MFP_UART0_RXD | SYS_GPD_MFPL_PD1MFP_UART0_TXD);
/* Set I2C PA multi-function pins */
SYS->GPA_MFPL &= ~(SYS_GPA_MFPL_PA2MFP_Msk | SYS_GPA_MFPL_PA3MFP_Msk);
SYS->GPA_MFPL |= (SYS_GPA_MFPL_PA2MFP_I2C0_SDA | SYS_GPA_MFPL_PA3MFP_I2C0_SCL);
}
void SYS_Init(void)
{
/*---------------------------------------------------------------------------------------------------------*/
/* Init System Clock */
/*---------------------------------------------------------------------------------------------------------*/
/* Enable Internal RC 22.1184 MHz clock */
CLK_EnableXtalRC(CLK_PWRCTL_HIRCEN_Msk);
/* Waiting for Internal RC clock ready */
CLK_WaitClockReady(CLK_STATUS_HIRCSTB_Msk);
/* Switch HCLK clock source to Internal RC and set HCLK divider to 1 */
CLK_SetHCLK(CLK_CLKSEL0_HCLKSEL_HIRC, CLK_CLKDIV0_HCLK(1));
/* Enable external XTAL 12 MHz clock */
CLK_EnableXtalRC(CLK_PWRCTL_HXTEN_Msk);
/* Waiting for external XTAL clock ready */
CLK_WaitClockReady(CLK_STATUS_HXTSTB_Msk);
/* Set Flash Access Delay */
FMC->FTCTL |= FMC_FTCTL_FOM_Msk;
/* Set core clock */
CLK_SetCoreClock(72000000);
/* Enable module clock */
CLK_EnableModuleClock(UART0_MODULE);
CLK_EnableModuleClock(UART1_MODULE);
CLK_EnableModuleClock(USBD_MODULE);
/* Select module clock source */
CLK_SetModuleClock(UART0_MODULE, CLK_CLKSEL1_UARTSEL_HXT, CLK_CLKDIV0_UART(1));
CLK_SetModuleClock(UART1_MODULE, CLK_CLKSEL1_UARTSEL_HXT, CLK_CLKDIV0_UART(1));
CLK_SetModuleClock(USBD_MODULE, 0, CLK_CLKDIV0_USB(3));
/* Enable USB LDO33 */
SYS->USBPHY = SYS_USBPHY_LDO33EN_Msk;
/*---------------------------------------------------------------------------------------------------------*/
/* Init I/O Multi-function */
/*---------------------------------------------------------------------------------------------------------*/
/* Set GPD multi-function pins for UART0 RXD, TXD and Clock Output */
SYS->GPD_MFPL = SYS_GPD_MFPL_PD0MFP_UART0_RXD | SYS_GPD_MFPL_PD1MFP_UART0_TXD | SYS_GPD_MFPL_PD6MFP_CLKO;
/* Set GPA multi-function pins for UART1 RXD and TXD */
SYS->GPA_MFPL = SYS_GPA_MFPL_PA0MFP_UART1_TXD | SYS_GPA_MFPL_PA1MFP_UART1_RXD;
/* Enable CLKO (PD.6) for monitor HCLK. CLKO = HCLK/8 Hz */
CLK_EnableCKO(CLK_CLKSEL1_CLKOSEL_HCLK, 2, 0);
}
void SYS_Init(void)
{
/*---------------------------------------------------------------------------------------------------------*/
/* Init System Clock */
/*---------------------------------------------------------------------------------------------------------*/
/* Enable HIRC clock (Internal RC 22.1184MHz) */
CLK_EnableXtalRC(CLK_PWRCTL_HIRCEN_Msk);
/* Wait for HIRC clock ready */
CLK_WaitClockReady(CLK_STATUS_HIRCSTB_Msk);
/* Select HCLK clock source as HIRC and and HCLK source divider as 1 */
CLK_SetHCLK(CLK_CLKSEL0_HCLKSEL_HIRC, CLK_CLKDIV0_HCLK(1));
/* Set PLL to Power-down mode and PLLSTB bit in CLK_STATUS register will be cleared by hardware.*/
CLK_DisablePLL();
/* Enable HXT clock (external XTAL 12MHz) */
CLK_EnableXtalRC(CLK_PWRCTL_HXTEN_Msk);
/* Wait for HXT clock ready */
CLK_WaitClockReady(CLK_STATUS_HXTSTB_Msk);
/* Set core clock as PLL_CLOCK from PLL */
CLK_SetCoreClock(PLL_CLOCK);
/* Enable UART module clock */
CLK_EnableModuleClock(UART0_MODULE);
/* Select UART module clock source as HXT and UART module clock divider as 1 */
CLK_SetModuleClock(UART0_MODULE, CLK_CLKSEL1_UARTSEL_HXT, CLK_CLKDIV0_UART(1));
/* Enable DAC module clock */
CLK_EnableModuleClock(DAC_MODULE);
/*---------------------------------------------------------------------------------------------------------*/
/* Init I/O Multi-function */
/*---------------------------------------------------------------------------------------------------------*/
/* Set PD multi-function pins for UART0 RXD and TXD */
SYS->GPD_MFPL &= ~(SYS_GPD_MFPL_PD0MFP_Msk | SYS_GPD_MFPL_PD1MFP_Msk);
SYS->GPD_MFPL |= (SYS_GPD_MFPL_PD0MFP_UART0_RXD | SYS_GPD_MFPL_PD1MFP_UART0_TXD);
/* Set PB multi-function pins for DAC voltage output */
SYS->GPB_MFPL &= ~SYS_GPB_MFPL_PB0MFP_Msk;
SYS->GPB_MFPL |= SYS_GPB_MFPL_PB0MFP_DAC ;
}
/**
* This function will initial Clock tree.
*/
void clock_init(void)
{
/*---------------------------------------------------------------------------------------------------------*/
/* Init System Clock */
/*---------------------------------------------------------------------------------------------------------*/
/* Unlock protected registers */
SYS_UnlockReg();
/* Enable External XTAL (4~24 MHz) */
CLK_EnableXtalRC(CLK_PWRCTL_HXTEN_Msk);
/* Waiting for 12MHz clock ready */
CLK_WaitClockReady( CLK_STATUS_HXTSTB_Msk);
/* Switch HCLK clock source to HXT */
CLK_SetHCLK(CLK_CLKSEL0_HCLKSEL_HXT,CLK_CLKDIV0_HCLK(1));
/* Set PLL to power down mode and PLL_STB bit in CLKSTATUS register will be cleared by hardware.*/
CLK->PLLCTL |= CLK_PLLCTL_PD_Msk;
/* Set PLL frequency */
CLK->PLLCTL = CLK_PLLCTL_84MHz_HXT;
/* Waiting for clock ready */
CLK_WaitClockReady(CLK_STATUS_PLLSTB_Msk);
/* Switch HCLK clock source to PLL */
CLK_SetHCLK(CLK_CLKSEL0_HCLKSEL_PLL,CLK_CLKDIV0_HCLK(1));
/* Update System Core Clock */
/* User can use SystemCoreClockUpdate() to calculate SystemCoreClock. */
SystemCoreClockUpdate();
/* Lock protected registers */
SYS_LockReg();
}
void SYS_Init(void)
{
/*---------------------------------------------------------------------------------------------------------*/
/* Init System Clock */
/*---------------------------------------------------------------------------------------------------------*/
/* Enable HIRC clock (Internal RC 22.1184MHz) */
CLK_EnableXtalRC(CLK_PWRCTL_HIRCEN_Msk);
/* Wait for HIRC clock ready */
CLK_WaitClockReady(CLK_STATUS_HIRCSTB_Msk);
/* Select HCLK clock source as HIRC and and HCLK source divider as 1 */
CLK_SetHCLK(CLK_CLKSEL0_HCLKSEL_HIRC, CLK_CLKDIV0_HCLK(1));
/* Enable HXT clock (external XTAL 12MHz) */
CLK_EnableXtalRC(CLK_PWRCTL_HXTEN_Msk);
/* Wait for HXT clock ready */
CLK_WaitClockReady(CLK_STATUS_HXTSTB_Msk);
/* Set core clock as PLL_CLOCK from PLL */
CLK_SetCoreClock(PLL_CLOCK);
/* Enable UART module clock */
CLK_EnableModuleClock(UART0_MODULE);
CLK_EnableModuleClock(UART1_MODULE);
/* Select UART module clock source as HXT and UART module clock divider as 1 */
CLK_SetModuleClock(UART0_MODULE, CLK_CLKSEL1_UARTSEL_HXT, CLK_CLKDIV0_UART(1));
CLK_SetModuleClock(UART1_MODULE, CLK_CLKSEL1_UARTSEL_HXT, CLK_CLKDIV0_UART(1));
/*---------------------------------------------------------------------------------------------------------*/
/* Init I/O Multi-function */
/*---------------------------------------------------------------------------------------------------------*/
/* Set PD multi-function pins for UART0 RXD(PD.0) and TXD(PD.1) */
SYS->GPD_MFPL &= ~(SYS_GPD_MFPL_PD0MFP_Msk | SYS_GPD_MFPL_PD1MFP_Msk);
SYS->GPD_MFPL |= (SYS_GPD_MFPL_PD0MFP_UART0_RXD | SYS_GPD_MFPL_PD1MFP_UART0_TXD);
/* Set PB multi-function pins for UART1 RXD(PB.2), TXD(PB.3) and nCTS(PB.4) */
SYS->GPB_MFPL &= ~(SYS_GPB_MFPL_PB2MFP_Msk | SYS_GPB_MFPL_PB3MFP_Msk | SYS_GPB_MFPL_PB4MFP_Msk);
SYS->GPB_MFPL |= (SYS_GPB_MFPL_PB2MFP_UART1_RXD | SYS_GPB_MFPL_PB3MFP_UART1_TXD | SYS_GPB_MFPL_PB4MFP_UART1_nCTS);
/* Set PB multi-function pins for UART1 nRTS(PB.8) */
SYS->GPB_MFPH &= (~SYS_GPB_MFPH_PB8MFP_Msk);
SYS->GPB_MFPH |= SYS_GPB_MFPH_PB8MFP_UART1_nRTS;
}
//=========================================================================
__myevic__ void LightSleep()
{
// Switch Core Clock to HXT/3 (4MHz)
CLK_SetHCLK( CLK_CLKSEL0_HCLKSEL_HXT, CLK_CLKDIV0_HCLK( 3 ) );
// Update clock data
SystemCoreClockUpdate();
// Switch off the PLL Clock & the HIRC
CLK_DisablePLL();
CLK_DisableXtalRC( CLK_PWRCTL_HIRCEN_Msk );
// Disable Clocks of Modules using HCLK/HXT or LIRC
CLK_DisableModuleClock( PWM0_MODULE );
CLK_DisableModuleClock( SPI0_MODULE );
CLK_DisableModuleClock( CRC_MODULE );
#if (ENABLE_UART)
CLK_DisableModuleClock( UART0_MODULE );
#endif
gFlags.wake_up = 0;
do
{
CLK_Idle();
}
while ( !gFlags.wake_up );
// Wake up the HIRC
CLK_EnableXtalRC( CLK_PWRCTL_HIRCEN_Msk );
CLK_WaitClockReady( CLK_STATUS_HIRCSTB_Msk );
// Wake up the PLL
CLK_SetCoreClock( CPU_FREQ );
// Update clock data
SystemCoreClockUpdate();
// Wake up Modules
#if (ENABLE_UART)
CLK_EnableModuleClock( UART0_MODULE );
#endif
CLK_EnableModuleClock( PWM0_MODULE );
CLK_EnableModuleClock( SPI0_MODULE );
CLK_EnableModuleClock( CRC_MODULE );
}
void SYS_Init(void)
{
/*---------------------------------------------------------------------------------------------------------*/
/* Init System Clock */
/*---------------------------------------------------------------------------------------------------------*/
/* Enable Internal RC 22.1184MHz clock */
CLK_EnableXtalRC(CLK_PWRCTL_HIRCEN_Msk);
/* Waiting for Internal RC clock ready */
CLK_WaitClockReady(CLK_STATUS_HIRCSTB_Msk);
/* Switch HCLK clock source to Internal RC and HCLK source divide 1 */
CLK_SetHCLK(CLK_CLKSEL0_HCLKSEL_HIRC, CLK_CLKDIV0_HCLK(1));
/* Enable external XTAL 12MHz clock */
CLK_EnableXtalRC(CLK_PWRCTL_HXTEN_Msk);
/* Waiting for external XTAL clock ready */
CLK_WaitClockReady(CLK_STATUS_HXTSTB_Msk);
/* Set core clock as PLL_CLOCK from PLL */
CLK_SetCoreClock(PLL_CLOCK);
/* Enable UART module clock */
CLK_EnableModuleClock(UART0_MODULE);
/* Select UART module clock source */
CLK_SetModuleClock(UART0_MODULE, CLK_CLKSEL1_UARTSEL_HXT, CLK_CLKDIV0_UART(1));
/*---------------------------------------------------------------------------------------------------------*/
/* Init I/O Multi-function */
/*---------------------------------------------------------------------------------------------------------*/
/* Set PD multi-function pins for UART0 RXD and TXD */
SYS->GPD_MFPL &= ~(SYS_GPD_MFPL_PD0MFP_Msk | SYS_GPD_MFPL_PD1MFP_Msk);
SYS->GPD_MFPL |= (SYS_GPD_MFPL_PD0MFP_UART0_RXD | SYS_GPD_MFPL_PD1MFP_UART0_TXD);
}
void setupSystemClock()
{
#ifdef M451
SYS_UnlockReg();
/* Enable HIRC clock */
CLK_EnableXtalRC(CLK_PWRCTL_HIRCEN_Msk);
/* Waiting for HIRC clock ready */
CLK_WaitClockReady(CLK_STATUS_HIRCSTB_Msk);
/* Switch HCLK clock source to HIRC */
CLK_SetHCLK(CLK_CLKSEL0_HCLKSEL_HIRC, CLK_CLKDIV0_HCLK(1));
/* Set core clock as PLL_CLOCK from PLL and SysTick source to HCLK/2*/
CLK_SetCoreClock(SYSTEM_CLOCK);
CLK_SetSysTickClockSrc(CLK_CLKSEL0_STCLKSEL_HCLK_DIV2);
SYS_LockReg();
#else
uint32_t u32PllCr;
uint16_t i;
UNLOCKREG();
DrvSYS_SetOscCtrl(E_SYS_OSC22M, 1);
while (DrvSYS_GetChipClockSourceStatus(E_SYS_OSC22M) != 1);
DrvSYS_SelectPLLSource(E_SYS_INTERNAL_22M);
u32PllCr = DrvSYS_GetPLLContent(E_SYS_INTERNAL_22M, SYSTEM_CLOCK);
/*Delay for 12M or 22M stable*/
for (i=0;i<10000;i++);
DrvSYS_SetPLLContent(u32PllCr);
SYSCLK->PLLCON.OE = 0;
SYSCLK->PLLCON.PD = 0;
/*Delay for PLL stable*/
for (i=0;i<10000;i++);
/* Change HCLK clock source to be PLL. */
DrvSYS_SelectHCLKSource(2);
LOCKREG(); // Lock the protected registers
#endif
}
void SYS_Init(void)
{
/*---------------------------------------------------------------------------------------------------------*/
/* Init System Clock */
/*---------------------------------------------------------------------------------------------------------*/
/* Enable HIRC clock */
CLK_EnableXtalRC(CLK_PWRCTL_HIRCEN_Msk);
/* Waiting for HIRC clock ready */
CLK_WaitClockReady(CLK_STATUS_HIRCSTB_Msk);
/* Switch HCLK clock source to HIRC */
CLK_SetHCLK(CLK_CLKSEL0_HCLKSEL_HIRC, CLK_CLKDIV0_HCLK(1));
/* Enable HXT and LIRC */
CLK_EnableXtalRC(CLK_PWRCTL_HXTEN_Msk | CLK_PWRCTL_LIRCEN_Msk);
/* Waiting for clock ready */
CLK_WaitClockReady(CLK_STATUS_HXTSTB_Msk | CLK_STATUS_LIRCSTB_Msk);
/* Set core clock as PLL_CLOCK from PLL and SysTick source to HCLK/2*/
CLK_SetCoreClock(PLL_CLOCK);
CLK_SetSysTickClockSrc(CLK_CLKSEL0_STCLKSEL_HCLK_DIV2);
/* Enable peripheral clock */
CLK_EnableModuleClock(UART0_MODULE);
CLK_EnableModuleClock(WDT_MODULE);
/* Peripheral clock source */
CLK_SetModuleClock(UART0_MODULE, CLK_CLKSEL1_UARTSEL_PLL, CLK_CLKDIV0_UART(1));
CLK_SetModuleClock(WDT_MODULE, CLK_CLKSEL1_WDTSEL_LIRC, 0);
/*---------------------------------------------------------------------------------------------------------*/
/* Init I/O Multi-function */
/*---------------------------------------------------------------------------------------------------------*/
/* Set PD multi-function pins for UART0 RXD, TXD */
SYS->GPD_MFPL = SYS_GPD_MFPL_PD0MFP_UART0_RXD | SYS_GPD_MFPL_PD1MFP_UART0_TXD;
}
void SYS_Init(void)
{
/*---------------------------------------------------------------------------------------------------------*/
/* Init System Clock */
/*---------------------------------------------------------------------------------------------------------*/
/* Enable External XTAL (4~24 MHz) */
CLK_EnableXtalRC(CLK_PWRCTL_HXTEN_Msk);
/* Waiting for 12MHz clock ready */
CLK_WaitClockReady(CLK_STATUS_HXTSTB_Msk);
/* Switch HCLK clock source to XTAL */
CLK_SetHCLK(CLK_CLKSEL0_HCLKSEL_HXT, CLK_CLKDIV0_HCLK(1));
/* Set PLL to power down mode and PLL_STB bit in CLKSTATUS register will be cleared by hardware.*/
CLK->PLLCTL |= CLK_PLLCTL_PD_Msk;
/* Set PLL frequency */
CLK->PLLCTL = PLLCTL_SETTING;
/* Waiting for clock ready */
CLK_WaitClockReady(CLK_STATUS_PLLSTB_Msk);
/* Switch HCLK clock source to PLL */
CLK->CLKSEL0 &= (~CLK_CLKSEL0_HCLKSEL_Msk);
CLK->CLKSEL0 |= CLK_CLKSEL0_HCLKSEL_PLL;
/* Enable IP clock */
CLK_EnableModuleClock(UART0_MODULE);
/* Select IP clock source */
CLK_SetModuleClock(UART0_MODULE, CLK_CLKSEL1_UARTSEL_HXT, CLK_CLKDIV0_UART(1));
/* Update System Core Clock */
/* User can use SystemCoreClockUpdate() to calculate PllClock, SystemCoreClock and CycylesPerUs automatically. */
SystemCoreClockUpdate();
PllClock = PLL_CLOCK; // PLL
SystemCoreClock = PLL_CLOCK / 2; // HCLK
CyclesPerUs = SystemCoreClock / 1000000; // For SYS_SysTickDelay()
/*---------------------------------------------------------------------------------------------------------*/
/* Init I/O Multi-function */
/*---------------------------------------------------------------------------------------------------------*/
/* Set GPD multi-function pins for UART0 RXD and TXD */
SYS->GPD_MFPL &= ~(SYS_GPD_MFPL_PD0MFP_Msk | SYS_GPD_MFPL_PD1MFP_Msk);
SYS->GPD_MFPL |= (SYS_GPD_MFPL_PD0MFP_UART0_RXD | SYS_GPD_MFPL_PD1MFP_UART0_TXD);
/*---------------------------------------------------------------------------------------------------------*/
/* Init USB Host clock */
/*---------------------------------------------------------------------------------------------------------*/
// Configure OTG function as Host-Only
SYS->USBPHY = 0x101;
#ifdef AUTO_POWER_CONTROL
/* Below settings is use power switch IC to enable/disable USB Host power.
Set PC.4 is VBUS_EN function pin and PC.3 VBUS_ST function pin */
//SYS->GPC_MFPL &= ~(SYS_GPC_MFPL_PC4MFP_Msk | SYS_GPC_MFPL_PC3MFP_Msk);
//SYS->GPC_MFPL |= (SYS_GPC_MFPL_PC3MFP_USB_VBUS_ST | SYS_GPC_MFPL_PC4MFP_USB_VBUS_EN);
/* Below settings is use power switch IC to enable/disable USB Host power.
Set PA.2 is VBUS_EN function pin and PA.3 VBUS_ST function pin */
SYS->GPA_MFPL &= ~(SYS_GPA_MFPL_PA2MFP_Msk | SYS_GPA_MFPL_PA3MFP_Msk);
SYS->GPA_MFPL |= (SYS_GPA_MFPL_PA3MFP_USB_VBUS_ST | SYS_GPA_MFPL_PA2MFP_USB_VBUS_EN);
CLK->APBCLK0 |= CLK_APBCLK0_OTGCKEN_Msk; //Enable OTG_EN clock
#else
/* Below settings is use GPIO to enable/disable USB Host power.
Set PC.4 output high to enable USB power */
SYS->GPC_MFPL &= ~SYS_GPC_MFPL_PC4MFP_Msk;
PC->MODE = (PC->MODE & ~GPIO_MODE_MODE4_Msk) | (0x1 << GPIO_MODE_MODE4_Pos);
PC->DOUT |= 0x10;
#endif
// USB clock divided by 2
CLK->CLKDIV0 = (CLK->CLKDIV0 & ~CLK_CLKDIV0_USBDIV_Msk) | (1 << CLK_CLKDIV0_USBDIV_Pos);
// Enable USB Host
CLK->AHBCLK |= CLK_AHBCLK_USBHCKEN_Msk;
}
void SYS_Init(void)
{
/*---------------------------------------------------------------------------------------------------------*/
/* Init System Clock */
/*---------------------------------------------------------------------------------------------------------*/
/* Enable HIRC clock (Internal RC 22.1184MHz) */
CLK_EnableXtalRC(CLK_PWRCTL_HIRCEN_Msk);
/* Waiting for HIRC clock ready */
CLK_WaitClockReady(CLK_STATUS_HIRCSTB_Msk);
/* Select HCLK clock source as HIRC and and HCLK clock divider as 1 */
CLK_SetHCLK(CLK_CLKSEL0_HCLKSEL_HIRC, CLK_CLKDIV0_HCLK(1));
/* Enable HXT clock (external XTAL 12MHz) */
CLK_EnableXtalRC(CLK_PWRCTL_HXTEN_Msk);
/* Waiting for HXT clock ready */
CLK_WaitClockReady(CLK_STATUS_HXTSTB_Msk);
/* Set core clock as PLL_CLOCK from PLL */
CLK_SetCoreClock(PLL_CLOCK);
/* Waiting for PLL clock ready */
CLK_WaitClockReady(CLK_STATUS_PLLSTB_Msk);
/* Enable PWM0 module clock */
CLK_EnableModuleClock(PWM0_MODULE);
/*---------------------------------------------------------------------------------------------------------*/
/* PWM clock frequency configuration */
/*---------------------------------------------------------------------------------------------------------*/
/* Select HCLK clock source as PLL and and HCLK clock divider as 2 */
CLK_SetHCLK(CLK_CLKSEL0_HCLKSEL_PLL, CLK_CLKDIV0_HCLK(2));
/* PWM clock frequency can be set equal or double to HCLK by choosing case 1 or case 2 */
/* case 1.PWM clock frequency is set equal to HCLK: select PWM module clock source as PCLK */
CLK_SetModuleClock(PWM0_MODULE, CLK_CLKSEL2_PWM0SEL_PCLK0, NULL);
/* case 2.PWM clock frequency is set double to HCLK: select PWM module clock source as PLL */
//CLK_SetModuleClock(PWM0_MODULE, CLK_CLKSEL2_PWM0SEL_PLL, NULL);
/*---------------------------------------------------------------------------------------------------------*/
/* Enable UART module clock */
CLK_EnableModuleClock(UART0_MODULE);
/* Select UART module clock source as HXT and UART module clock divider as 1 */
CLK_SetModuleClock(UART0_MODULE, CLK_CLKSEL1_UARTSEL_HXT, CLK_CLKDIV0_UART(1));
/* Reset PWM0 module */
SYS_ResetModule(PWM0_RST);
/* Update System Core Clock */
SystemCoreClockUpdate();
/*---------------------------------------------------------------------------------------------------------*/
/* Init I/O Multi-function */
/*---------------------------------------------------------------------------------------------------------*/
/* Set PD multi-function pins for UART0 RXD and TXD */
SYS->GPD_MFPL &= ~(SYS_GPD_MFPL_PD0MFP_Msk | SYS_GPD_MFPL_PD1MFP_Msk);
SYS->GPD_MFPL |= (SYS_GPD_MFPL_PD0MFP_UART0_RXD | SYS_GPD_MFPL_PD1MFP_UART0_TXD);
/* Set PC multi-function pins for PWM0 Channel0~3 */
SYS->GPC_MFPL = (SYS->GPC_MFPL & (~SYS_GPC_MFPL_PC0MFP_Msk));
SYS->GPC_MFPL |= SYS_GPC_MFPL_PC0MFP_PWM0_CH0;
SYS->GPC_MFPL = (SYS->GPC_MFPL & (~SYS_GPC_MFPL_PC1MFP_Msk));
SYS->GPC_MFPL |= SYS_GPC_MFPL_PC1MFP_PWM0_CH1;
SYS->GPC_MFPL = (SYS->GPC_MFPL & (~SYS_GPC_MFPL_PC2MFP_Msk));
SYS->GPC_MFPL |= SYS_GPC_MFPL_PC2MFP_PWM0_CH2;
SYS->GPC_MFPL = (SYS->GPC_MFPL & (~SYS_GPC_MFPL_PC3MFP_Msk));
SYS->GPC_MFPL |= SYS_GPC_MFPL_PC3MFP_PWM0_CH3;
}
void SYS_Init(void)
{
/*---------------------------------------------------------------------------------------------------------*/
/* Init System Clock */
/*---------------------------------------------------------------------------------------------------------*/
/* Enable HIRC clock (Internal RC 22.1184MHz) */
CLK->PWRCTL |= CLK_PWRCTL_HIRCEN_Msk;
/* Waiting for HIRC clock ready */
while(!(CLK->STATUS & CLK_STATUS_HIRCSTB_Msk));
/* Select HCLK clock source as HIRC and and HCLK clock divider as 1 */
CLK->CLKSEL0 = (CLK->CLKSEL0 & ~CLK_CLKSEL0_HCLKSEL_Msk) | CLK_CLKSEL0_HCLKSEL_HIRC;
CLK->CLKDIV0 = (CLK->CLKDIV0 & ~CLK_CLKDIV0_HCLKDIV_Msk) | CLK_CLKDIV0_HCLK(1);
/* Enable HXT clock (external XTAL 12MHz) */
CLK->PWRCTL |= CLK_PWRCTL_HXTEN_Msk;
/* Waiting for HXT clock ready */
while(!(CLK->STATUS & CLK_STATUS_HXTSTB_Msk));
/* Enable PLL and Set PLL frequency */
CLK->PLLCTL = PLLCTL_SETTING;
while(!(CLK->STATUS & CLK_STATUS_PLLSTB_Msk));
CLK->CLKSEL0 = (CLK->CLKSEL0 & ~CLK_CLKSEL0_HCLKSEL_Msk) | CLK_CLKSEL0_HCLKSEL_PLL;
/* Enable PWM1 module clock */
CLK->APBCLK1 |= CLK_APBCLK1_PWM1CKEN_Msk;
/*---------------------------------------------------------------------------------------------------------*/
/* PWM clock frequency configuration */
/*---------------------------------------------------------------------------------------------------------*/
/* Select HCLK clock divider as 2 */
CLK->CLKDIV0 = (CLK->CLKDIV0 & ~CLK_CLKDIV0_HCLKDIV_Msk) | CLK_CLKDIV0_HCLK(2);
/* PWM clock frequency can be set equal or double to HCLK by choosing case 1 or case 2 */
/* case 1.PWM clock frequency is set equal to HCLK: select PWM module clock source as PCLK */
CLK->CLKSEL2 = (CLK->CLKSEL2 & ~CLK_CLKSEL2_PWM1SEL_Msk) | CLK_CLKSEL2_PWM1SEL_PCLK1;
/* case 2.PWM clock frequency is set double to HCLK: select PWM module clock source as PLL */
//CLK->CLKSEL2 = (CLK->CLKSEL2 & ~CLK_CLKSEL2_PWM1SEL_Msk) | CLK_CLKSEL2_PWM1SEL_PLL;
/*---------------------------------------------------------------------------------------------------------*/
/* Enable PDMA module clock */
CLK->AHBCLK |= CLK_AHBCLK_PDMACKEN_Msk;
/* Enable UART module clock */
CLK->APBCLK0 |= CLK_APBCLK0_UART0CKEN_Msk;
/* Select UART module clock source as HXT and UART module clock divider as 1 */
CLK->CLKSEL1 = (CLK->CLKSEL1 & ~CLK_CLKSEL1_UARTSEL_Msk) | CLK_CLKSEL1_UARTSEL_HXT;
/* Reset PWM1 module */
SYS->IPRST2 |= SYS_IPRST2_PWM1RST_Msk;
SYS->IPRST2 &= ~SYS_IPRST2_PWM1RST_Msk;
/* Update System Core Clock */
SystemCoreClockUpdate();
/*---------------------------------------------------------------------------------------------------------*/
/* Init I/O Multi-function */
/*---------------------------------------------------------------------------------------------------------*/
/* Set PD multi-function pins for UART0 RXD and TXD */
SYS->GPD_MFPL &= ~(SYS_GPD_MFPL_PD0MFP_Msk | SYS_GPD_MFPL_PD1MFP_Msk);
SYS->GPD_MFPL |= (SYS_GPD_MFPL_PD0MFP_UART0_RXD | SYS_GPD_MFPL_PD1MFP_UART0_TXD);
/* Set PC multi-function pins for PWM1 Channel 0 and 2 */
SYS->GPC_MFPL = (SYS->GPC_MFPL & (~SYS_GPC_MFPL_PC6MFP_Msk));
SYS->GPC_MFPL |= SYS_GPC_MFPL_PC6MFP_PWM1_CH0;
SYS->GPC_MFPH = (SYS->GPC_MFPH & (~SYS_GPC_MFPH_PC11MFP_Msk));
SYS->GPC_MFPH |= SYS_GPC_MFPH_PC11MFP_PWM1_CH2;
}
void SYS_Init(void)
{
/*---------------------------------------------------------------------------------------------------------*/
/* Init System Clock */
/*---------------------------------------------------------------------------------------------------------*/
/* Unlock protected registers */
SYS_UnlockReg();
/* Enable External XTAL (4~24 MHz) */
CLK_EnableXtalRC(CLK_PWRCON_HXT_EN_Msk);
/* Waiting for 12MHz clock ready */
CLK_WaitClockReady( CLK_CLKSTATUS_HXT_STB_Msk);
/* Switch HCLK clock source to HXT */
CLK_SetHCLK(CLK_CLKSEL0_HCLK_S_HXT,CLK_CLKDIV0_HCLK(1));
/* Set PLL to power down mode and PLL_STB bit in CLKSTATUS register will be cleared by hardware.*/
CLK->PLLCON|= CLK_PLLCON_PD_Msk;
/* Set PLL frequency */
CLK->PLLCON = PLLCON_SETTING;
/* Waiting for clock ready */
CLK_WaitClockReady(CLK_CLKSTATUS_PLL_STB_Msk);
/* Switch HCLK clock source to PLL */
CLK_SetHCLK(CLK_CLKSEL0_HCLK_S_PLL,CLK_CLKDIV0_HCLK(1));
/* Enable IP clock */
CLK_EnableModuleClock(UART0_MODULE);
/* enable PWM0 Channel 0~5 peripheral clock */
CLK_EnableModuleClock(PWM0CH01_MODULE);
CLK_EnableModuleClock(PWM0CH23_MODULE);
CLK_EnableModuleClock(PWM0CH45_MODULE);
/* Select IP clock source */
CLK_SetModuleClock(UART0_MODULE,CLK_CLKSEL1_UART_S_HXT,CLK_CLKDIV0_UART(1));
/* Set PCLK as PWM0 channel 0~3 clock source */
CLK_SetModuleClock(PWM0CH01_MODULE,CLK_CLKSEL2_PWM0CH01_S_PCLK,1);
CLK_SetModuleClock(PWM0CH23_MODULE,CLK_CLKSEL2_PWM0CH23_S_PCLK,1);
CLK_SetModuleClock(PWM0CH45_MODULE,CLK_CLKSEL2_PWM0CH45_S_PCLK,1);
/* Update System Core Clock */
/* User can use SystemCoreClockUpdate() to calculate SystemCoreClock. */
SystemCoreClockUpdate();
/*---------------------------------------------------------------------------------------------------------*/
/* Init I/O Multi-function */
/*---------------------------------------------------------------------------------------------------------*/
/* Set GPG multi-function pins for UART0 RXD and TXD */
SYS->GPG_MFPL = SYS_GPG_MFPL_PG1_MFP_UART0_RXD | SYS_GPG_MFPL_PG2_MFP_UART0_TXD ;
/* Set GPG multi-function pins for CKO */
SYS->GPC_MFPL = (SYS->GPC_MFPL & ~SYS_GPC_MFPL_PC5_MFP_Msk) | SYS_GPC_MFPL_PC5_MFP_CLK_O ;
/* Set A5 A6 C10 C11 A12 A11 multi-function pins for PWM Channel 0~5 */
SYS->GPA_MFPL = (SYS->GPA_MFPL & ~(SYS_GPA_MFPL_PA5_MFP_Msk | SYS_GPA_MFPL_PA6_MFP_Msk)) | SYS_GPA_MFPL_PA5_MFP_PWM0_CH0 | SYS_GPA_MFPL_PA6_MFP_PWM0_CH1;
SYS->GPC_MFPH = (SYS->GPC_MFPH & ~(SYS_GPC_MFPH_PC10_MFP_Msk | SYS_GPC_MFPH_PC11_MFP_Msk)) | SYS_GPC_MFPH_PC10_MFP_PWM0_CH2 | SYS_GPC_MFPH_PC11_MFP_PWM0_CH3;
SYS->GPA_MFPH = (SYS->GPA_MFPH & ~(SYS_GPA_MFPH_PA12_MFP_Msk | SYS_GPA_MFPH_PA11_MFP_Msk)) | SYS_GPA_MFPH_PA12_MFP_PWM0_CH4 | SYS_GPA_MFPH_PA11_MFP_PWM0_CH5;
/* Lock protected registers */
SYS_LockReg();
}
/*---------------------------------------------------------------------------------------------------------*/
int32_t main(void)
{
uint32_t u32data;
/* Unlock protected registers */
SYS_UnlockReg();
/* Init System, peripheral clock and multi-function I/O */
SYS_Init();
/* Lock protected registers */
SYS_LockReg();
/* Init UART0 for printf */
UART0_Init();
printf("\n\nCPU @ %d Hz\n", SystemCoreClock);
printf("+---------------------------------------+\n");
printf("| M451 System Driver Sample Code |\n");
printf("+---------------------------------------+\n");
if(M32(FLAG_ADDR) == SIGNATURE)
{
printf(" CPU Reset success!\n");
M32(FLAG_ADDR) = 0;
printf(" Press any key to continue ...\n");
getchar();
}
/*---------------------------------------------------------------------------------------------------------*/
/* Misc system function test */
/*---------------------------------------------------------------------------------------------------------*/
/* Read Part Device ID */
printf("Product ID 0x%x\n", SYS->PDID);
/* Get reset source from last operation */
u32data = SYS->RSTSTS;
printf("Reset Source 0x%x\n", u32data);
/* Clear reset source */
SYS->RSTSTS = u32data;
/* Unlock protected registers for Brown-Out Detector settings */
SYS_UnlockReg();
/* Check if the write-protected registers are unlocked before BOD setting and CPU Reset */
if(SYS->REGLCTL != 0)
{
printf("Protected Address is Unlocked\n");
}
/* Enable Brown-Out Detector and Low Voltage Reset function, and set Brown-Out Detector voltage 2.7V */
SYS->BODCTL = SYS_BODCTL_BODEN_Msk | SYS_BODCTL_BODVL_2_7V | SYS_BODCTL_LVREN_Msk;
/* Enable BOD interrupt */
NVIC_EnableIRQ(BOD_IRQn);
/* Run PLL Test */
SYS_PLL_Test();
/* Write a signature work to SRAM to check if it is reset by software */
M32(FLAG_ADDR) = SIGNATURE;
printf("\n\n >>> Reset CPU <<<\n");
/* Wait for message send out */
while(!(UART0->FIFOSTS & UART_FIFOSTS_TXEMPTYF_Msk));
/* Select HCLK clock source as HIRC and HCLK source divider as 1 */
CLK->CLKSEL0 = (CLK->CLKSEL0 & (~CLK_CLKSEL0_HCLKSEL_Msk)) | CLK_CLKSEL0_HCLKSEL_HIRC;
CLK->CLKDIV0 = (CLK->CLKDIV0 & (~CLK_CLKDIV0_HCLKDIV_Msk)) | CLK_CLKDIV0_HCLK(1);
/* Set PLL to Power down mode and HW will also clear PLLSTB bit in CLKSTATUS register */
CLK->PLLCTL |= CLK_PLLCTL_PD_Msk;
/* Reset CPU */
SYS->IPRST0 |= SYS_IPRST0_CPURST_Msk;
}
void SYS_Init(void)
{
/*---------------------------------------------------------------------------------------------------------*/
/* Init System Clock */
/*---------------------------------------------------------------------------------------------------------*/
/* Enable Internal RC 22.1184MHz clock */
CLK_EnableXtalRC(CLK_PWRCTL_HIRCEN_Msk);
/* Waiting for Internal RC clock ready */
CLK_WaitClockReady(CLK_STATUS_HIRCSTB_Msk);
/* Switch HCLK clock source to Internal RC and HCLK source divide 1 */
CLK_SetHCLK(CLK_CLKSEL0_HCLKSEL_HIRC, CLK_CLKDIV0_HCLK(1));
/* Enable external XTAL 12MHz clock */
CLK_EnableXtalRC(CLK_PWRCTL_HXTEN_Msk);
/* Waiting for external XTAL clock ready */
CLK_WaitClockReady(CLK_STATUS_HXTSTB_Msk);
/* Set Flash Access Delay */
FMC->FTCTL |= FMC_FTCTL_FOM_Msk;
/* Set core clock */
CLK_SetCoreClock(72000000);
/* Enable module clock */
CLK_EnableModuleClock(UART0_MODULE);
CLK_EnableModuleClock(USBD_MODULE);
CLK_EnableModuleClock(TMR0_MODULE);
CLK_EnableModuleClock(I2C0_MODULE);
CLK_EnableModuleClock(SPI1_MODULE);
/* Select module clock source */
CLK_SetModuleClock(UART0_MODULE, CLK_CLKSEL1_UARTSEL_HXT, CLK_CLKDIV0_UART(1));
CLK_SetModuleClock(USBD_MODULE, 0, CLK_CLKDIV0_USB(3));
CLK_SetModuleClock(TMR0_MODULE, CLK_CLKSEL1_TMR0SEL_HXT, 0);
CLK_SetModuleClock(SPI1_MODULE, CLK_CLKSEL2_SPI1SEL_PLL, 0);
/* Enable USB LDO33 */
SYS->USBPHY = SYS_USBPHY_LDO33EN_Msk;
/*---------------------------------------------------------------------------------------------------------*/
/* Init I/O Multi-function */
/*---------------------------------------------------------------------------------------------------------*/
/* Set PD.0, PD.1, PD.6, PD.4 and PD.5 as SPI1_I2SMCLK, UART0 TXD, UART0 RXD, I2C0_SDA and I2C0_SCL function pins */
SYS->GPD_MFPL = SYS_GPD_MFPL_PD0MFP_SPI1_I2SMCLK | SYS_GPD_MFPL_PD1MFP_UART0_TXD | SYS_GPD_MFPL_PD6MFP_UART0_RXD |
SYS_GPD_MFPL_PD4MFP_I2C0_SDA | SYS_GPD_MFPL_PD5MFP_I2C0_SCL;
/* Set I2S1 interface: I2S1_LRCLK (PA.4), I2S1_DO (PA.5), I2S1_DI (PA.6), I2S1_BCLK (PA.7) */
SYS->GPA_MFPL = SYS_GPA_MFPL_PA4MFP_SPI1_SS | SYS_GPA_MFPL_PA5MFP_SPI1_MOSI | SYS_GPA_MFPL_PA6MFP_SPI1_MISO | SYS_GPA_MFPL_PA7MFP_SPI1_CLK;
/* Set PC.1 as CLKO pin */
SYS->GPC_MFPL = SYS_GPC_MFPL_PC1MFP_CLKO;
/* Enable CLKO (PC.1) for monitor HCLK. CLKO = HCLK/8 Hz */
CLK_EnableCKO(CLK_CLKSEL1_CLKOSEL_HCLK, 2, 0);
}
void SYS_Init(void)
{
/*---------------------------------------------------------------------------------------------------------*/
/* Init System Clock */
/*---------------------------------------------------------------------------------------------------------*/
/* Enable HIRC clock (Internal RC 22.1184MHz) */
CLK->PWRCTL |= CLK_PWRCTL_HIRCEN_Msk;
/* Waiting for HIRC clock ready */
while(!(CLK->STATUS & CLK_STATUS_HIRCSTB_Msk));
/* Select HCLK clock source as HIRC and and HCLK clock divider as 1 */
CLK->CLKSEL0 &= ~CLK_CLKSEL0_HCLKSEL_Msk;
CLK->CLKSEL0 |= CLK_CLKSEL0_HCLKSEL_HIRC;
CLK->CLKDIV0 &= ~CLK_CLKDIV0_HCLKDIV_Msk;
CLK->CLKDIV0 |= CLK_CLKDIV0_HCLK(1);
/* Set PLL to Power-down mode and PLLSTB bit in CLK_STATUS register will be cleared by hardware.*/
CLK->PLLCTL |= CLK_PLLCTL_PD_Msk;
/* Enable HXT clock (external XTAL 12MHz) */
CLK->PWRCTL |= CLK_PWRCTL_HXTEN_Msk;
/* Waiting for HXT clock ready */
while(!(CLK->STATUS & CLK_STATUS_HXTSTB_Msk));
/* Set core clock as PLL_CLOCK from PLL */
CLK->PLLCTL = PLLCTL_SETTING;
while(!(CLK->STATUS & CLK_STATUS_PLLSTB_Msk));
CLK->CLKSEL0 &= (~CLK_CLKSEL0_HCLKSEL_Msk);
CLK->CLKSEL0 |= CLK_CLKSEL0_HCLKSEL_PLL;
/* Update system core clock */
PllClock = PLL_CLOCK; // PLL
SystemCoreClock = PLL_CLOCK / 1; // HCLK
CyclesPerUs = PLL_CLOCK / 1000000; // For CLK_SysTickDelay()
/* Enable UART module clock */
CLK->APBCLK0 |= CLK_APBCLK0_UART0CKEN_Msk;
/* Select UART module clock source as HXT and UART module clock divider as 1 */
CLK->CLKSEL1 &= ~CLK_CLKSEL1_UARTSEL_Msk;
CLK->CLKSEL1 |= CLK_CLKSEL1_UARTSEL_HXT;
CLK->CLKDIV0 &= ~CLK_CLKDIV0_UARTDIV_Msk;
CLK->CLKDIV0 |= CLK_CLKDIV0_UART(1);
/* Enable PWM0 module clock */
CLK->APBCLK1 |= CLK_APBCLK1_PWM0CKEN_Msk;
/* Select PWM0 module clock source as PLL */
CLK->CLKSEL2 &= ~CLK_CLKSEL2_PWM0SEL_Msk;
CLK->CLKSEL2 |= CLK_CLKSEL2_PWM0SEL_PLL;
/* Enable DAC module clock */
CLK->APBCLK1 |= CLK_APBCLK1_DACCKEN_Msk;
/* Enable PDMA module clock */
CLK->AHBCLK |= CLK_AHBCLK_PDMACKEN_Msk;
/*---------------------------------------------------------------------------------------------------------*/
/* Init I/O Multi-function */
/*---------------------------------------------------------------------------------------------------------*/
/* Set PD multi-function pins for UART0 RXD and TXD */
SYS->GPD_MFPL &= ~(SYS_GPD_MFPL_PD0MFP_Msk | SYS_GPD_MFPL_PD1MFP_Msk);
SYS->GPD_MFPL |= (SYS_GPD_MFPL_PD0MFP_UART0_RXD | SYS_GPD_MFPL_PD1MFP_UART0_TXD);
/* Set PB multi-function pins for DAC voltage output */
SYS->GPB_MFPL &= ~SYS_GPB_MFPL_PB0MFP_Msk;
SYS->GPB_MFPL |= SYS_GPB_MFPL_PB0MFP_DAC;
/* Set PC multi-function pins for PWMA Channel0 */
SYS->GPC_MFPL = (SYS->GPC_MFPL & (~SYS_GPC_MFPL_PC0MFP_Msk));
SYS->GPC_MFPL |= SYS_GPC_MFPL_PC0MFP_PWM0_CH0;
}
//=========================================================================
//----- (0000652C) --------------------------------------------------------
void InitDevices()
{
SYS_UnlockReg();
// Internal 22.1184MHz oscillator
CLK_EnableXtalRC( CLK_PWRCTL_HIRCEN_Msk );
CLK_WaitClockReady( CLK_STATUS_HIRCSTB_Msk );
CLK_SetHCLK( CLK_CLKSEL0_HCLKSEL_HIRC, CLK_CLKDIV0_HCLK( 1 ) );
// 12.000MHz external crystal
CLK_EnableXtalRC( CLK_PWRCTL_HXTEN_Msk );
CLK_WaitClockReady( CLK_STATUS_HXTSTB_Msk );
// FMC Frequency Optimisation mode <= 72MHz
FMC_EnableFreqOptimizeMode( FMC_FTCTL_OPTIMIZE_72MHZ );
// Setup PLL to 144MHz and HCLK source to PLL/2
CLK_SetCoreClock( CPU_FREQ );
// UART0 CLK = HXT/1
#if (ENABLE_UART)
CLK_EnableModuleClock( UART0_MODULE );
CLK_SetModuleClock( UART0_MODULE, CLK_CLKSEL1_UARTSEL_HXT, CLK_CLKDIV0_UART( 1 ) );
#endif
// USB CLK = PLL/3 (48MHz)
CLK_EnableModuleClock( USBD_MODULE );
CLK_SetModuleClock( USBD_MODULE, 0, CLK_CLKDIV0_USB( 3 ) );
SYS->USBPHY = SYS_USBPHY_LDO33EN_Msk;
// WDT CLK = LIRC/1
CLK_EnableModuleClock( WDT_MODULE );
CLK_SetModuleClock( WDT_MODULE, CLK_CLKSEL1_WDTSEL_LIRC, 0 );
// SPI0 CLK = PCLK0/1
CLK_EnableModuleClock( SPI0_MODULE );
// EADC CLK = PCLK1/8 (9MHz)
CLK_EnableModuleClock( EADC_MODULE );
CLK_SetModuleClock( EADC_MODULE, 0, CLK_CLKDIV0_EADC( 8 ) );
// CRC CLK = HCLK/1
CLK_EnableModuleClock( CRC_MODULE );
// TIMERS CLOCKS
CLK_EnableModuleClock( TMR0_MODULE );
CLK_EnableModuleClock( TMR1_MODULE );
CLK_EnableModuleClock( TMR2_MODULE );
CLK_EnableModuleClock( TMR3_MODULE );
CLK_SetModuleClock( TMR0_MODULE, CLK_CLKSEL1_TMR0SEL_HXT, 0 );
CLK_SetModuleClock( TMR1_MODULE, CLK_CLKSEL1_TMR1SEL_PCLK0, 0 );
CLK_SetModuleClock( TMR2_MODULE, CLK_CLKSEL1_TMR2SEL_HIRC, 0 );
CLK_SetModuleClock( TMR3_MODULE, CLK_CLKSEL1_TMR3SEL_HXT, 0 );
// Enable battery voltage sampling by ADC
SYS->IVSCTL |= SYS_IVSCTL_VBATUGEN_Msk;
// ADC reference voltage
SYS->VREFCTL = SYS_VREFCTL_VREF_2_56V;
// Brown-out detector; interrupts under 2.2V
SYS_EnableBOD( SYS_BODCTL_BOD_RST_EN, SYS_BODCTL_BODVL_2_2V );
// Update clock data
SystemCoreClockUpdate();
WDT_Open( WDT_TIMEOUT_2POW18, WDT_RESET_DELAY_18CLK, TRUE, FALSE );
SYS_LockReg();
}
static void prvSetupHardware( void )
{
/* Unlock protected registers */
SYS_UnlockReg();
/* Enable External XTAL (4~24 MHz) */
CLK_EnableXtalRC(CLK_PWRCTL_HXTEN_Msk);
/* Waiting for 12MHz clock ready */
CLK_WaitClockReady( CLK_STATUS_HXTSTB_Msk);
/* Switch HCLK clock source to HXT */
CLK_SetHCLK(CLK_CLKSEL0_HCLKSEL_HXT,CLK_CLKDIV0_HCLK(1));
/* Set PLL to power down mode and PLL_STB bit in CLKSTATUS register will be cleared by hardware.*/
CLK->PLLCTL |= CLK_PLLCTL_PD_Msk;
/* Set PLL frequency */
CLK->PLLCTL = CLK_PLLCTL_84MHz_HXT;
/* Waiting for clock ready */
CLK_WaitClockReady(CLK_STATUS_PLLSTB_Msk);
/* Switch HCLK clock source to PLL */
CLK_SetHCLK(CLK_CLKSEL0_HCLKSEL_PLL,CLK_CLKDIV0_HCLK(1));
/* Enable IP clock */
CLK_EnableModuleClock(UART0_MODULE);
CLK_EnableModuleClock(EMAC_MODULE);
/* Select IP clock source */
CLK_SetModuleClock(UART0_MODULE, CLK_CLKSEL1_UARTSEL_HXT, CLK_CLKDIV0_UART(1));
// Configure MDC clock rate to HCLK / (127 + 1) = 656 kHz if system is running at 84 MHz
CLK_SetModuleClock(EMAC_MODULE, 0, CLK_CLKDIV3_EMAC(127));
/* Update System Core Clock */
/* User can use SystemCoreClockUpdate() to calculate SystemCoreClock. */
SystemCoreClockUpdate();
/*---------------------------------------------------------------------------------------------------------*/
/* Init I/O Multi-function */
/*---------------------------------------------------------------------------------------------------------*/
/* Set GPG multi-function pins for UART0 RXD and TXD */
SYS->GPG_MFPL = SYS_GPG_MFPL_PG1MFP_UART0_RXD | SYS_GPG_MFPL_PG2MFP_UART0_TXD ;
// Configure RMII pins
SYS->GPC_MFPL = SYS_GPC_MFPL_PC0MFP_EMAC_REFCLK |
SYS_GPC_MFPL_PC1MFP_EMAC_MII_RXERR |
SYS_GPC_MFPL_PC2MFP_EMAC_MII_RXDV |
SYS_GPC_MFPL_PC3MFP_EMAC_MII_RXD1 |
SYS_GPC_MFPL_PC4MFP_EMAC_MII_RXD0 |
SYS_GPC_MFPL_PC6MFP_EMAC_MII_TXD0 |
SYS_GPC_MFPL_PC7MFP_EMAC_MII_TXD1;
SYS->GPC_MFPH = SYS_GPC_MFPH_PC8MFP_EMAC_MII_TXEN;
// Enable high slew rate on all RMII pins
PC->SLEWCTL |= 0x1DF;
// Configure MDC, MDIO at PB14 & PB15
SYS->GPB_MFPH = SYS_GPB_MFPH_PB14MFP_EMAC_MII_MDC | SYS_GPB_MFPH_PB15MFP_EMAC_MII_MDIO;
/* Lock protected registers */
SYS_LockReg();
/* Init UART to 115200-8n1 for print message */
UART_Open(UART0, 115200);
}
