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add low freq clocking options 4,8,16MHz

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This commit is contained in:
Conor Patrick 2019-02-06 17:54:52 -05:00
parent 1b5e230d45
commit 765d532f82
1 changed files with 144 additions and 4 deletions
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148
targets/stm32l432/src/init.c
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@ -65,6 +65,7 @@ void hw_init(int lowfreq)
#else
#endif
LL_Init();
init_gpio();
if (lowfreq)
{
@ -76,7 +77,6 @@ void hw_init(int lowfreq)
}
init_gpio();
if (!lowfreq)
{
@ -85,7 +85,6 @@ void hw_init(int lowfreq)
init_millisecond_timer(lowfreq);
#if DEBUG_LEVEL > 0
init_debug_uart();
#endif
@ -208,7 +207,7 @@ void SystemClock_Config(void)
NVIC_SetPriority(SysTick_IRQn, NVIC_EncodePriority(NVIC_GetPriorityGrouping(),0, 0));
}
void SystemClock_Config_LF(void)
void SystemClock_Config_LF4(void)
{
SET_BIT(RCC->APB1ENR1, RCC_APB1ENR1_PWREN);
@ -266,6 +265,130 @@ void SystemClock_Config_LF(void)
/* SysTick_IRQn interrupt configuration */
NVIC_SetPriority(SysTick_IRQn, NVIC_EncodePriority(NVIC_GetPriorityGrouping(),0, 0));
}
// 8MHz
void SystemClock_Config_LF(void)
{
SET_BIT(RCC->APB1ENR1, RCC_APB1ENR1_PWREN);
LL_FLASH_SetLatency(LL_FLASH_LATENCY_0);
if(LL_FLASH_GetLatency() != LL_FLASH_LATENCY_0)
{
Error_Handler();
}
LL_PWR_SetRegulVoltageScaling(LL_PWR_REGU_VOLTAGE_SCALE1);
LL_RCC_LSI_Enable();
/* Wait till LSI is ready */
// while(LL_RCC_LSI_IsReady() != 1)
// {
//
// }
LL_RCC_MSI_Enable();
/* Wait till MSI is ready */
// while(LL_RCC_MSI_IsReady() != 1)
// {
//
// }
LL_RCC_MSI_EnableRangeSelection();
LL_RCC_MSI_SetRange(LL_RCC_MSIRANGE_7);
LL_RCC_MSI_SetCalibTrimming(0);
LL_RCC_SetSysClkSource(LL_RCC_SYS_CLKSOURCE_MSI);
/* Wait till System clock is ready */
// while(LL_RCC_GetSysClkSource() != LL_RCC_SYS_CLKSOURCE_STATUS_MSI)
// {
//
// }
LL_RCC_SetAHBPrescaler(LL_RCC_SYSCLK_DIV_1);
LL_RCC_SetAPB1Prescaler(LL_RCC_APB1_DIV_1);
LL_RCC_SetAPB2Prescaler(LL_RCC_APB2_DIV_1);
LL_Init1msTick(8000000);
LL_SYSTICK_SetClkSource(LL_SYSTICK_CLKSOURCE_HCLK);
LL_SetSystemCoreClock(8000000);
LL_RCC_SetUSARTClockSource(LL_RCC_USART1_CLKSOURCE_PCLK2);
LL_RCC_SetRNGClockSource(LL_RCC_RNG_CLKSOURCE_MSI);
/* SysTick_IRQn interrupt configuration */
NVIC_SetPriority(SysTick_IRQn, NVIC_EncodePriority(NVIC_GetPriorityGrouping(),0, 0));
}
// 16MHz
void SystemClock_Config_LF16(void)
{
SET_BIT(RCC->APB1ENR1, RCC_APB1ENR1_PWREN);
LL_FLASH_SetLatency(LL_FLASH_LATENCY_0);
if(LL_FLASH_GetLatency() != LL_FLASH_LATENCY_0)
{
Error_Handler();
}
LL_PWR_SetRegulVoltageScaling(LL_PWR_REGU_VOLTAGE_SCALE1);
LL_RCC_LSI_Enable();
/* Wait till LSI is ready */
while(LL_RCC_LSI_IsReady() != 1)
{
}
LL_RCC_MSI_Enable();
/* Wait till MSI is ready */
while(LL_RCC_MSI_IsReady() != 1)
{
}
LL_RCC_MSI_EnableRangeSelection();
LL_RCC_MSI_SetRange(LL_RCC_MSIRANGE_8);
LL_RCC_MSI_SetCalibTrimming(0);
LL_RCC_SetSysClkSource(LL_RCC_SYS_CLKSOURCE_MSI);
/* Wait till System clock is ready */
while(LL_RCC_GetSysClkSource() != LL_RCC_SYS_CLKSOURCE_STATUS_MSI)
{
}
LL_RCC_SetAHBPrescaler(LL_RCC_SYSCLK_DIV_1);
LL_RCC_SetAPB1Prescaler(LL_RCC_APB1_DIV_1);
LL_RCC_SetAPB2Prescaler(LL_RCC_APB2_DIV_1);
LL_Init1msTick(16000000);
LL_SYSTICK_SetClkSource(LL_SYSTICK_CLKSOURCE_HCLK);
LL_SetSystemCoreClock(16000000);
LL_RCC_SetUSARTClockSource(LL_RCC_USART1_CLKSOURCE_PCLK2);
LL_RCC_SetRNGClockSource(LL_RCC_RNG_CLKSOURCE_MSI);
/* SysTick_IRQn interrupt configuration */
NVIC_SetPriority(SysTick_IRQn, NVIC_EncodePriority(NVIC_GetPriorityGrouping(),0, 0));
}
void init_usb()
@ -413,8 +536,25 @@ void init_gpio(void)
LL_AHB2_GRP1_EnableClock(LL_AHB2_GRP1_PERIPH_GPIOA);
LL_AHB2_GRP1_EnableClock(LL_AHB2_GRP1_PERIPH_GPIOB);
LL_GPIO_SetPinMode(SOLO_BUTTON_PORT,SOLO_BUTTON_PIN,LL_GPIO_MODE_INPUT);
LL_GPIO_SetPinPull(SOLO_BUTTON_PORT,SOLO_BUTTON_PIN,LL_GPIO_PULL_UP);
#ifdef SOLO_AMS_IRQ_PORT
LL_AHB2_GRP1_EnableClock(LL_AHB2_GRP1_PERIPH_GPIOC);
/**/
LL_GPIO_InitTypeDef GPIO_InitStruct;
GPIO_InitStruct.Pin = SOLO_AMS_IRQ_PIN;
GPIO_InitStruct.Mode = LL_GPIO_MODE_INPUT;
GPIO_InitStruct.Pull = LL_GPIO_PULL_NO;
LL_GPIO_Init(SOLO_AMS_IRQ_PORT, &GPIO_InitStruct);
LL_GPIO_SetPinMode(SOLO_AMS_IRQ_PORT,SOLO_AMS_IRQ_PIN,LL_GPIO_MODE_INPUT);
LL_GPIO_SetPinPull(SOLO_AMS_IRQ_PORT,SOLO_AMS_IRQ_PIN,LL_GPIO_PULL_UP);
#endif
}
void init_millisecond_timer(int lf)
@ -430,7 +570,7 @@ void init_millisecond_timer(int lf)
if (!lf)
TIM_InitStruct.Prescaler = 48000;
else
TIM_InitStruct.Prescaler = 4000;
TIM_InitStruct.Prescaler = 8000;
TIM_InitStruct.CounterMode = LL_TIM_COUNTERMODE_UP;
TIM_InitStruct.Autoreload = 90;