/**
* @brief Configure CPU clock.
* @param None
* @retval None
*/
void ClockConfigure ( void )
{
/* Enable HSE (High Speed External) clock */
RST_CLK_HSEconfig(RST_CLK_HSE_ON);
if (RST_CLK_HSEstatus() == ERROR) {
while (1);
}
/* Configures the CPU_PLL clock source */
RST_CLK_CPU_PLLconfig(RST_CLK_CPU_PLLsrcHSEdiv1, RST_CLK_CPU_PLLmul10);
/* Enables the CPU_PLL */
RST_CLK_CPU_PLLcmd(ENABLE);
if (RST_CLK_CPU_PLLstatus() == ERROR) {
while (1);
}
/* Enables the RST_CLK_PCLK_EEPROM */
RST_CLK_PCLKcmd(RST_CLK_PCLK_EEPROM, ENABLE);
/* Sets the code latency value */
EEPROM_SetLatency(EEPROM_Latency_3);
/* Select the CPU_PLL output as input for CPU_C3_SEL */
RST_CLK_CPU_PLLuse(ENABLE);
/* Set CPUClk Prescaler */
RST_CLK_CPUclkPrescaler(RST_CLK_CPUclkDIV1);
/* Select the CPU clock source */
RST_CLK_CPUclkSelection(RST_CLK_CPUclkCPU_C3);
}
/* Frequencies setup */
void Setup_CPU_Clock(void)
{
/* Enable HSE */
RST_CLK_HSEconfig(RST_CLK_HSE_ON);
if (RST_CLK_HSEstatus() != SUCCESS)
{
/* Trap */
while (1)
{
}
}
/* CPU_C1_SEL = HSE */
RST_CLK_CPU_PLLconfig(RST_CLK_CPU_PLLsrcHSEdiv1, RST_CLK_CPU_PLLmul10);
RST_CLK_CPU_PLLcmd(ENABLE);
if (RST_CLK_CPU_PLLstatus() != SUCCESS)
{
/* Trap */
while (1)
{
}
}
/* CPU_C3_SEL = CPU_C2_SEL */
RST_CLK_CPUclkPrescaler(RST_CLK_CPUclkDIV1);
/* CPU_C2_SEL = PLL */
RST_CLK_CPU_PLLuse(ENABLE);
/* HCLK_SEL = CPU_C3_SEL */
RST_CLK_CPUclkSelection(RST_CLK_CPUclkCPU_C3);
}
void BRD_Clock_Init_HSE_PLL(uint32_t PLL_Mul_sub1) // 128 MHz
{
// Сброс настроек системы тактирования
RST_CLK_DeInit();
// Инициализация генератора на внешнем кварцевом резонаторе (HSE)
RST_CLK_HSEconfig (RST_CLK_HSE_ON);
while (RST_CLK_HSEstatus() != SUCCESS);
// Инициализация блока PLL
// Включение использования PLL
RST_CLK_CPU_PLLcmd (ENABLE);
// Настройка источника и коэффициента умножения PLL
// (CPU_C1_SEL = HSE)
RST_CLK_CPU_PLLconfig (RST_CLK_CPU_PLLsrcHSEdiv1, PLL_Mul_sub1);
while (RST_CLK_CPU_PLLstatus() != SUCCESS);
// Подключение PLL к системе тактирования
// (CPU_C2_SEL = PLLCPUo)
RST_CLK_CPU_PLLuse (ENABLE);
// Настройка коэффициента деления блока CPU_C3_SEL
// (CPU_C3_SEL = CPU_C2)
RST_CLK_CPUclkPrescaler (RST_CLK_CPUclkDIV1);
// Использование процессором сигнала CPU_C3
// (HCLK = CPU_C3)
RST_CLK_CPUclkSelection (RST_CLK_CPUclkCPU_C3);
// Update System Clock
BRD_CPU_CLK = HSE_Value * (PLL_Mul_sub1 + 1);
}
void BRD_Clock_Init_HSE_PLL(uint32_t PLL_Mul_sub1)
{
uint32_t freqCPU;
RST_CLK_DeInit();
/* Enable HSE (High Speed External) clock */
RST_CLK_HSEconfig(RST_CLK_HSE_ON);
while (RST_CLK_HSEstatus() != SUCCESS);
// /* Configures the CPU_PLL clock source */
RST_CLK_CPU_PLLconfig(RST_CLK_CPU_PLLsrcHSEdiv1, PLL_Mul_sub1);
/* Enables the CPU_PLL */
RST_CLK_CPU_PLLcmd(ENABLE);
while (RST_CLK_CPU_PLLstatus() == ERROR);
/* Enables the RST_CLK_PCLK_EEPROM */
RST_CLK_PCLKcmd(RST_CLK_PCLK_EEPROM, ENABLE);
/* Sets the code latency value */
freqCPU = HSE_Value * (PLL_Mul_sub1 + 1);
if (freqCPU < 25E+6)
EEPROM_SetLatency(EEPROM_Latency_0);
else if (freqCPU < 50E+6)
EEPROM_SetLatency(EEPROM_Latency_1);
else if (freqCPU < 75E+6)
EEPROM_SetLatency(EEPROM_Latency_2);
else if (freqCPU < 100E+6)
EEPROM_SetLatency(EEPROM_Latency_3);
else if (freqCPU < 125E+6)
EEPROM_SetLatency(EEPROM_Latency_4);
else //if (PLL_Mul * HSE_Value <= 150E+6)
EEPROM_SetLatency(EEPROM_Latency_5);
// Additional Supply Power
if (freqCPU < 40E+6)
SetSelectRI(RI_till_40MHz);
else if (freqCPU < 80E+6)
SetSelectRI(RI_till_80MHz);
else
SetSelectRI(RI_over_80MHz);
/* Select the CPU_PLL output as input for CPU_C3_SEL */
RST_CLK_CPU_PLLuse(ENABLE);
/* Set CPUClk Prescaler */
RST_CLK_CPUclkPrescaler(RST_CLK_CPUclkDIV1);
/* Select the CPU clock source */
RST_CLK_CPUclkSelection(RST_CLK_CPUclkCPU_C3);
// Update System Clock
BRD_CPU_CLK = freqCPU;
}
void BRD_Clock_Init_HSE_dir(void)
{
RST_CLK_DeInit();
/* Enable HSE (High Speed External) clock */
RST_CLK_HSEconfig(RST_CLK_HSE_ON);
while (RST_CLK_HSEstatus() != SUCCESS);
RST_CLK_CPU_PLLuse(DISABLE);
RST_CLK_CPUclkPrescaler(RST_CLK_CPUclkDIV1);
/* Select the CPU clock source */
RST_CLK_CPUclkSelection(RST_CLK_CPUclkCPU_C3);
// Update System Clock
BRD_CPU_CLK = HSE_Value;
}
//-----------------------------------------------------------------//
// Setup clocks
// CPU core clock (HCLK) = 32 MHz clock from 4 MHz HSE
// ADC clock = 4 MHz clock from 4 MHz HSE
//-----------------------------------------------------------------//
void Setup_CPU_Clock(void)
{
// Enable HSE
RST_CLK_HSEconfig(RST_CLK_HSE_ON);
if (RST_CLK_HSEstatus() != SUCCESS)
{
while (1) {} // Trap
}
//-------------------------------//
// Setup CPU PLL and CPU_C1_SEL
// CPU_C1 = HSE, PLL = x8
RST_CLK_CPU_PLLconfig(RST_CLK_CPU_PLLsrcHSEdiv1, RST_CLK_CPU_PLLmul8);
RST_CLK_CPU_PLLcmd(ENABLE);
if (RST_CLK_CPU_PLLstatus() != SUCCESS)
{
while (1) {} // Trap
}
// Setup CPU_C2 and CPU_C3
// CPU_C3 = CPU_C2
RST_CLK_CPUclkPrescaler(RST_CLK_CPUclkDIV1);
// CPU_C2 = CPU PLL output
RST_CLK_CPU_PLLuse(ENABLE);
// Switch to CPU_C3
// HCLK = CPU_C3
RST_CLK_CPUclkSelection(RST_CLK_CPUclkCPU_C3);
//-------------------------------//
// Setup ADC clock
// ADC_C2 = CPU_C1
RST_CLK_ADCclkSelection(RST_CLK_ADCclkCPU_C1);
// ADC_C3 = ADC_C2
RST_CLK_ADCclkPrescaler(RST_CLK_ADCclkDIV1);
// Enable ADC_CLK
RST_CLK_ADCclkEnable(ENABLE);
// Update system clock variable
SystemCoreClockUpdate();
// Enable clock on all ports (macro are defined in systemfunc.h)
RST_CLK_PCLKcmd(ALL_PORTS_CLK, ENABLE);
// Enable clock on peripheral blocks used in design
RST_CLK_PCLKcmd(PERIPHERALS_CLK ,ENABLE);
}
void main(void)
#endif
{
RST_CLK_PCLKcmd(RST_CLK_PCLK_PORTD, ENABLE);
/* Configure all unused PORT pins to low power consumption */
PORT_StructInit(&PORT_InitStructure);
PORT_InitStructure.PORT_Pin = (PORT_Pin_All & ~(PORT_Pin_10 | PORT_Pin_11 |
PORT_Pin_12 | PORT_Pin_13 |
PORT_Pin_14));
PORT_Init(MDR_PORTD, &PORT_InitStructure);
/* Configure PORTD pins 10..14 for output to switch LEDs on/off */
PORT_InitStructure.PORT_Pin = (PORT_Pin_10 | PORT_Pin_11 | PORT_Pin_12 |
PORT_Pin_13 | PORT_Pin_14);
PORT_InitStructure.PORT_OE = PORT_OE_OUT;
PORT_InitStructure.PORT_FUNC = PORT_FUNC_PORT;
PORT_InitStructure.PORT_MODE = PORT_MODE_DIGITAL;
PORT_InitStructure.PORT_SPEED = PORT_SPEED_SLOW;
PORT_Init(MDR_PORTD, &PORT_InitStructure);
/* Consequently turn all three used LEDs on and off */
LEDOn(LED1);
Delay(4*BLINK_DELAY);
LEDOff(LED1);
Delay(4*BLINK_DELAY);
LEDOn(LED2);
Delay(4*BLINK_DELAY);
LEDOff(LED2);
Delay(4*BLINK_DELAY);
LEDOn(LED3);
Delay(4*BLINK_DELAY);
LEDOff(LED3);
Delay(4*BLINK_DELAY);
/* Infinite loop that demonstrates different input clock sources using */
while (1)
{
/* Set RST_CLK to default */
RST_CLK_DeInit();
RST_CLK_PCLKcmd(RST_CLK_PCLK_PORTD, ENABLE);
/* 1. CPU_CLK = HSI clock */
/* Enable HSI clock source */
RST_CLK_HSIcmd(ENABLE);
/* Switch LED2 on and wait for HSI ready status */
LEDOn(LED2);
Delay(BLINK_DELAY);
if (RST_CLK_HSIstatus() == SUCCESS) /* Good HSI clock */
{
/* Switch LED2 off */
LEDOff(LED2);
/* Select HSI clock on the CPU clock MUX */
RST_CLK_CPUclkSelection(RST_CLK_CPUclkHSI);
/* LED1 blinking with HSI clock as input clock source */
BlinkLED1(BLINK_NUM, BLINK_DELAY);
}
else /* HSI timeout */
{
IndicateError();
}
/* 2. CPU_CLK = HSI/2 clock */
/* Enable HSI clock source */
RST_CLK_HSIcmd(ENABLE);
/* Disable CPU_PLL */
RST_CLK_CPU_PLLcmd(DISABLE);
/* Select HSI/2 clock as CPU_PLL input clock source */
RST_CLK_CPU_PLLconfig(RST_CLK_CPU_PLLsrcHSIdiv2, 1);
/* Switch LED2 on and wait for HSI ready status */
LEDOn(LED2);
Delay(BLINK_DELAY);
if (RST_CLK_HSIstatus() == SUCCESS) /* Good HSI clock */
{
/* Switch LED2 off */
LEDOff(LED2);
/* Set CPU_C3_prescaler to 1 */
RST_CLK_CPUclkPrescaler(RST_CLK_CPUclkDIV1);
/* Switch CPU_C2_SEL to CPU_C1 clock instead of CPU_PLL output */
RST_CLK_CPU_PLLuse(DISABLE);
/* LED1 blinking with HSI/2 clock as input clock source */
BlinkLED1(BLINK_NUM, BLINK_DELAY);
}
else /* HSI timeout */
{
IndicateError();
}
/* 3. CPU_CLK = 7*HSE/2 clock */
/* Enable HSE clock oscillator */
RST_CLK_HSEconfig(RST_CLK_HSE_ON);
/* Switch LED2 on and wait for HSE ready status */
LEDOn(LED2);
Delay(BLINK_DELAY);
if (RST_CLK_HSEstatus() == SUCCESS) /* Good HSE clock */
{
/* Select HSE clock as CPU_PLL input clock source */
/* Set PLL multiplier to 7 */
RST_CLK_CPU_PLLconfig(RST_CLK_CPU_PLLsrcHSEdiv1, 7);
/* Enable CPU_PLL */
RST_CLK_CPU_PLLcmd(ENABLE);
/* Switch LED2 on and wait for PLL ready status */
if (RST_CLK_HSEstatus() == SUCCESS) /* Good CPU PLL */
{
/* Switch LED2 off */
LEDOff(LED2);
/* Set CPU_C3_prescaler to 2 */
RST_CLK_CPUclkPrescaler(RST_CLK_CPUclkDIV2);
/* Set CPU_C2_SEL to CPU_PLL output instead of CPU_C1 clock */
RST_CLK_CPU_PLLuse(ENABLE);
/* Select CPU_C3 clock on the CPU clock MUX */
RST_CLK_CPUclkSelection(RST_CLK_CPUclkCPU_C3);
/* LED1 blinking with 7*HSE/2 clock as input clock source */
BlinkLED1(BLINK_NUM, BLINK_DELAY);
}
else /* CPU_PLL timeout */
{
IndicateError();
}
}
else /* HSE timeout */
{
IndicateError();
}
/* 4. CPU_CLK = LSI clock */
/* Enable LSI clock source */
RST_CLK_LSIcmd(ENABLE);
/* Switch LED2 on and wait for LSI ready status */
LEDOn(LED2);
Delay(BLINK_DELAY);
if (RST_CLK_LSIstatus() == SUCCESS) /* Good LSI clock */
{
/* Switch LED2 off */
LEDOff(LED2);
/* Select LSI clock on the CPU clock MUX */
RST_CLK_CPUclkSelection(RST_CLK_CPUclkLSI);
/* LED1 blinking with LSI clock as input clock source */
BlinkLED1(BLINK_NUM, BLINK_DELAY);
}
else /* LSI timeout */
{
IndicateError();
}
}
}