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option to boot at 4MHz with no USB

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This commit is contained in:
Conor Patrick 2019-01-12 16:19:44 -05:00
parent 121070822f
commit 20f8aac768
3 changed files with 212 additions and 133 deletions
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4
targets/stm32l432/src/device.c
View File

@ -108,7 +108,9 @@ void device_reboot()
void device_init()
{
hw_init();
#ifndef IS_BOOTLOADER
nfc_init();
#endif
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);
@ -395,7 +397,9 @@ void device_manage()
}
}
#endif
#ifndef IS_BOOTLOADER
nfc_loop();
#endif
}
static int handle_packets()

76
targets/stm32l432/src/init.c
View File

@ -122,12 +122,14 @@ static void LL_Init(void)
NVIC_SetPriority(SysTick_IRQn, NVIC_EncodePriority(NVIC_GetPriorityGrouping(),0, 0));
}
static int NFC = 0;
/**
* @brief System Clock Configuration
* @retval None
*/
void SystemClock_Config(void)
{
if (!NFC)
{
LL_FLASH_SetLatency(LL_FLASH_LATENCY_2);
@ -209,8 +211,68 @@ void SystemClock_Config(void)
/* SysTick_IRQn interrupt configuration */
NVIC_SetPriority(SysTick_IRQn, NVIC_EncodePriority(NVIC_GetPriorityGrouping(),0, 0));
}
else
{
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_6);
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(4000000);
LL_SYSTICK_SetClkSource(LL_SYSTICK_CLKSOURCE_HCLK);
LL_SetSystemCoreClock(4000000);
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 usb_init()
{
if (!NFC)
{
// enable USB power
SET_BIT(PWR->CR2, PWR_CR2_USV);
@ -235,11 +297,13 @@ void usb_init()
USBD_Start(&Solo_USBD_Device);
}
}
/* TIM2 init function */
static void MX_TIM2_Init(void)
{
// if(!NFC)
{
LL_TIM_InitTypeDef TIM_InitStruct;
LL_TIM_OC_InitTypeDef TIM_OC_InitStruct;
@ -305,6 +369,7 @@ static void MX_TIM2_Init(void)
LL_GPIO_Init(GPIOA, &GPIO_InitStruct);
LL_TIM_EnableCounter(TIM2);
}
}
@ -369,7 +434,11 @@ static void MX_TIM6_Init(void)
// 48 MHz sys clock --> 6 MHz timer clock
// 48 MHz / 48000 == 1000 Hz
if (!NFC)
TIM_InitStruct.Prescaler = 48000;
else
TIM_InitStruct.Prescaler = 4000;
TIM_InitStruct.CounterMode = LL_TIM_COUNTERMODE_UP;
TIM_InitStruct.Autoreload = 90;
LL_TIM_Init(TIM6, &TIM_InitStruct);
@ -458,7 +527,10 @@ static void MX_SPI1_Init(void)
SPI_InitStruct.ClockPolarity = LL_SPI_POLARITY_LOW;
SPI_InitStruct.ClockPhase = LL_SPI_PHASE_2EDGE;
SPI_InitStruct.NSS = LL_SPI_NSS_SOFT;
if (!NFC)
SPI_InitStruct.BaudRate = LL_SPI_BAUDRATEPRESCALER_DIV64;
else
SPI_InitStruct.BaudRate = LL_SPI_BAUDRATEPRESCALER_DIV8;
SPI_InitStruct.BitOrder = LL_SPI_MSB_FIRST;
SPI_InitStruct.CRCCalculation = LL_SPI_CRCCALCULATION_DISABLE;
SPI_InitStruct.CRCPoly = 7;

5
targets/stm32l432/src/redirect.c
View File

@ -37,15 +37,18 @@ void _putchar(char c)
LL_USART_TransmitData8(DEBUG_UART,c);
#endif
}
static int NFC = 0;
int _write (int fd, const void *buf, long int len)
{
uint8_t * data = (uint8_t *) buf;
if (!NFC)
{
// Send out USB serial
CDC_Transmit_FS(data, len);
}
// Send out UART serial
while(len--)