mirror of
https://github.com/IcedRooibos/py32f0-template.git
synced 2025-10-29 08:52:04 -07:00
110 lines
3.0 KiB
C
110 lines
3.0 KiB
C
/***
|
|
* Demo: TIM1 DMA
|
|
*
|
|
*/
|
|
#include "main.h"
|
|
#include "py32f0xx_bsp_printf.h"
|
|
|
|
uint32_t TIM1ReloadCounter[9] = {900-1,800-1,700-1,600-1,500-1,400-1,300-1,200-1,100-1};
|
|
|
|
|
|
static void APP_GPIOConfig(void);
|
|
static void APP_SystemClockConfig(void);
|
|
static void APP_TIM1Config(void);
|
|
static void APP_DMAConfig(void);
|
|
|
|
|
|
int main(void)
|
|
{
|
|
APP_SystemClockConfig();
|
|
APP_GPIOConfig();
|
|
BSP_USART_Config(115200);
|
|
printf("TIM1 DMA Demo\r\nClock: %ld\r\n", SystemCoreClock);
|
|
|
|
APP_TIM1Config();
|
|
APP_DMAConfig();
|
|
while (1);
|
|
}
|
|
|
|
static void APP_TIM1Config(void)
|
|
{
|
|
LL_TIM_InitTypeDef TIM1CountInit = {0};
|
|
|
|
LL_APB1_GRP2_EnableClock(RCC_APBENR2_TIM1EN);
|
|
|
|
TIM1CountInit.ClockDivision = LL_TIM_CLOCKDIVISION_DIV1;
|
|
TIM1CountInit.CounterMode = LL_TIM_COUNTERMODE_UP;
|
|
/* Start with 1 second interval (at 8MHz) */
|
|
TIM1CountInit.Prescaler = 8000-1;
|
|
TIM1CountInit.Autoreload = 1000-1;
|
|
TIM1CountInit.RepetitionCounter = 0;
|
|
LL_TIM_Init(TIM1,&TIM1CountInit);
|
|
|
|
LL_TIM_EnableIT_UPDATE(TIM1);
|
|
LL_TIM_EnableDMAReq_UPDATE(TIM1);
|
|
LL_TIM_EnableCounter(TIM1);
|
|
|
|
NVIC_EnableIRQ(TIM1_BRK_UP_TRG_COM_IRQn);
|
|
NVIC_SetPriority(TIM1_BRK_UP_TRG_COM_IRQn,0);
|
|
}
|
|
|
|
static void APP_DMAConfig(void)
|
|
{
|
|
LL_DMA_InitTypeDef DMA_TIM1Reload ={0};
|
|
|
|
LL_AHB1_GRP1_EnableClock(LL_AHB1_GRP1_PERIPH_DMA1);
|
|
LL_APB1_GRP2_EnableClock(LL_APB1_GRP2_PERIPH_SYSCFG);
|
|
|
|
DMA_TIM1Reload.PeriphOrM2MSrcAddress = (uint32_t)&(TIM1->ARR);
|
|
DMA_TIM1Reload.MemoryOrM2MDstAddress = (uint32_t)TIM1ReloadCounter;
|
|
DMA_TIM1Reload.Direction = LL_DMA_DIRECTION_MEMORY_TO_PERIPH;
|
|
DMA_TIM1Reload.Mode = LL_DMA_MODE_NORMAL;
|
|
DMA_TIM1Reload.PeriphOrM2MSrcIncMode = LL_DMA_PERIPH_NOINCREMENT;
|
|
DMA_TIM1Reload.MemoryOrM2MDstIncMode = LL_DMA_MEMORY_INCREMENT;
|
|
DMA_TIM1Reload.PeriphOrM2MSrcDataSize = LL_DMA_PDATAALIGN_WORD;
|
|
DMA_TIM1Reload.MemoryOrM2MDstDataSize = LL_DMA_MDATAALIGN_WORD;
|
|
DMA_TIM1Reload.NbData = 9;
|
|
DMA_TIM1Reload.Priority = LL_DMA_PRIORITY_MEDIUM;
|
|
LL_DMA_Init(DMA1,LL_DMA_CHANNEL_1,&DMA_TIM1Reload);
|
|
|
|
/* Remap TIM1 update to DMA channel 1 */
|
|
LL_SYSCFG_SetDMARemap_CH1(LL_SYSCFG_DMA_MAP_TIM1_UP);
|
|
|
|
LL_DMA_EnableIT_TC(DMA1,LL_DMA_CHANNEL_1);
|
|
LL_DMA_EnableChannel(DMA1,LL_DMA_CHANNEL_1);
|
|
|
|
NVIC_EnableIRQ(DMA1_Channel1_IRQn);
|
|
NVIC_SetPriority(DMA1_Channel1_IRQn,0);
|
|
}
|
|
|
|
static void APP_SystemClockConfig(void)
|
|
{
|
|
LL_RCC_HSI_Enable();
|
|
while(LL_RCC_HSI_IsReady() != 1);
|
|
|
|
LL_RCC_SetSysClkSource(LL_RCC_SYS_CLKSOURCE_HSISYS);
|
|
while(LL_RCC_GetSysClkSource() != LL_RCC_SYS_CLKSOURCE_STATUS_HSISYS);
|
|
LL_RCC_SetAHBPrescaler(LL_RCC_SYSCLK_DIV_1);
|
|
LL_RCC_SetAPB1Prescaler(LL_RCC_APB1_DIV_1);
|
|
|
|
LL_Init1msTick(8000000);
|
|
LL_SetSystemCoreClock(8000000);
|
|
}
|
|
|
|
static void APP_GPIOConfig(void)
|
|
{
|
|
/* Set PB5 as GPIO output */
|
|
LL_IOP_GRP1_EnableClock(LL_IOP_GRP1_PERIPH_GPIOB);
|
|
LL_GPIO_SetPinMode(GPIOB, LL_GPIO_PIN_5, LL_GPIO_MODE_OUTPUT);
|
|
}
|
|
|
|
void APP_TIM1UpdateCallback(void)
|
|
{
|
|
LL_GPIO_TogglePin(GPIOB, LL_GPIO_PIN_5);
|
|
}
|
|
|
|
void APP_ErrorHandler(void)
|
|
{
|
|
while (1);
|
|
}
|