//---------------------------------------------------------------------------------------
bool MRCC_Config(void)
{
MRCC_DeInit();
int i = 16;
while (i > 0 && MRCC_WaitForOSC4MStartUp() != SUCCESS)
i--;
if (i != 0) {
/* Set HCLK to 60 MHz */
MRCC_HCLKConfig(MRCC_CKSYS_Div1);
/* Set CKTIM to 60 MHz */
MRCC_CKTIMConfig(MRCC_HCLK_Div1);
/* Set PCLK to 30 MHz */
MRCC_PCLKConfig(MRCC_CKTIM_Div2);
CFG_FLASHBurstConfig(CFG_FLASHBurst_Enable);
MRCC_CKSYSConfig(MRCC_CKSYS_OSC4MPLL, MRCC_PLL_Mul_15);
}
/* GPIO pins optimized for 3V3 operation */
MRCC_IOVoltageRangeConfig(MRCC_IOVoltageRange_3V3);
MRCC_PeripheralClockConfig(MRCC_Peripheral_GPIO, ENABLE);
MRCC_PeripheralClockConfig(MRCC_Peripheral_TIM0, ENABLE);
MRCC_PeripheralClockConfig(MRCC_Peripheral_I2C, ENABLE);
MRCC_PeripheralClockConfig(MRCC_Peripheral_SSP0, ENABLE);
return i > 0;
}
static void prvSetupHardware(void)
{
ErrorStatus OSC4MStartUpStatus01;
/* ST provided routine. */
/* MRCC system reset */
MRCC_DeInit();
/* Wait for OSC4M start-up */
OSC4MStartUpStatus01 = MRCC_WaitForOSC4MStartUp();
if(OSC4MStartUpStatus01 == SUCCESS)
{
/* Set HCLK to 60MHz */
MRCC_HCLKConfig(MRCC_CKSYS_Div1);
/* Set CKTIM to 60MHz */
MRCC_CKTIMConfig(MRCC_HCLK_Div1);
/* Set PCLK to 30MHz */
MRCC_PCLKConfig(MRCC_CKTIM_Div2);
/* Enable Flash Burst mode */
CFG_FLASHBurstConfig(CFG_FLASHBurst_Enable);
/* Set CK_SYS to 60 MHz */
MRCC_CKSYSConfig(MRCC_CKSYS_OSC4MPLL, MRCC_PLL_Mul_15);
}
/* GPIO pins optimized for 3V3 operation */
MRCC_IOVoltageRangeConfig(MRCC_IOVoltageRange_3V3);
/* GPIO clock source enable */
MRCC_PeripheralClockConfig(MRCC_Peripheral_GPIO, ENABLE);
/* EXTIT clock source enable */
MRCC_PeripheralClockConfig(MRCC_Peripheral_EXTIT, ENABLE);
/* TB clock source enable */
MRCC_PeripheralClockConfig(MRCC_Peripheral_TB, ENABLE);
/* Initialize the demonstration menu */
LCD_Init();
LCD_DisplayString(Line1, ( unsigned char * ) "www.FreeRTOS.org", BlackText);
LCD_DisplayString(Line2, ( unsigned char * ) " STR750 Demo ", BlackText);
EIC_IRQCmd(ENABLE);
}
/*******************************************************************************
* Function Name : Set_System
* Description : Set System clock.
* Input : None.
* Return : None.
*******************************************************************************/
void Set_System(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
// EXTIT_InitTypeDef EXTIT_InitStructure;
/* MRCC configuration --------------------------------------------------------*/
/* MRCC system reset(for debug purpose) */
MRCC_DeInit();
/* Wait for OSC4M start-up */
OSC4MStartUpStatus = MRCC_WaitForOSC4MStartUp();
if(OSC4MStartUpStatus == SUCCESS)
{
/* Set HCLK to 60MHz */
MRCC_HCLKConfig(MRCC_CKSYS_Div1);
/* Set CKTIM to 60MHz */
MRCC_CKTIMConfig(MRCC_HCLK_Div1);
/* Set PCLK to 30MHz */
MRCC_PCLKConfig(MRCC_CKTIM_Div2);
/* Enable Flash burst mode */
CFG_FLASHBurstConfig(CFG_FLASHBurst_Enable);
/* Set CKSYS to 60MHz */
MRCC_CKSYSConfig(MRCC_CKSYS_OSC4MPLL, MRCC_PLL_Mul_15);
}
/* Enbale No Clock Detected interrupt */
MRCC_ITConfig(MRCC_IT_NCKD, ENABLE);
/* Enable GPIOs, USB and EXTIT clocks */
MRCC_PeripheralClockConfig(MRCC_Peripheral_GPIO | MRCC_Peripheral_EXTIT | MRCC_Peripheral_USB
| MRCC_Peripheral_UART0, ENABLE);
MRCC_IOVoltageRangeConfig(MRCC_IOVoltageRange_3V3);
//EXTIT_ClearITPendingBit(EXTIT_ITLine14);
//EXTIT_InitStructure.EXTIT_ITLine = EXTIT_ITLine14;
//EXTIT_InitStructure.EXTIT_ITTrigger = EXTIT_ITTrigger_Rising;
//EXTIT_InitStructure.EXTIT_ITLineCmd = ENABLE;
//EXTIT_Init(&EXTIT_InitStructure);
/* Configure P2.18 ( USB Suspend/Resume ) as Output push-pull */
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_19;
GPIO_Init(GPIO2, &GPIO_InitStructure);
GPIO_WriteBit(GPIO2, GPIO_Pin_19, (BitAction)(0));
/* Configure P1.0 (D+ Pull up) as Output push-pull */
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0;
GPIO_Init(GPIO1, &GPIO_InitStructure);
/* Configure P0.1 (RED LED) as Output push-pull */
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1;
GPIO_Init(GPIO0, &GPIO_InitStructure);
GPIO_WriteBit(GPIO0, GPIO_Pin_1, (BitAction)(1));
/* Configure the UART0_Tx as Alternate function Push-Pull */
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_11;
GPIO_Init(GPIO0, &GPIO_InitStructure);
/* Configure the UART0_Rx as input floating */
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;
GPIO_Init(GPIO0, &GPIO_InitStructure);
UART_DeInit(UART0);
UART_ITConfig(UART0, UART_IT_Receive, ENABLE);
/* Configure the interrupt controller for UART0 channel */
EIC_IRQInitStructure.EIC_IRQChannel = UART0_IRQChannel;
EIC_IRQInitStructure.EIC_IRQChannelPriority = 1;
EIC_IRQInitStructure.EIC_IRQChannelCmd = ENABLE;
EIC_IRQInit(&EIC_IRQInitStructure);
}