first submission

2023-02-01 14:19:13 +08:00
parent d534aad004
commit b79c6ac80d
3711 changed files with 745432 additions and 2 deletions
@@ -0,0 +1,126 @@
+/********************************** (C) COPYRIGHT *******************************
+ * File Name          : main.c
+ * Author             : WCH
+ * Version            : V1.0.0
+ * Date               : 2021/06/06
+ * Description        : Main program body.
+*********************************************************************************
+* Copyright (c) 2021 Nanjing Qinheng Microelectronics Co., Ltd.
+* Attention: This software (modified or not) and binary are used for 
+* microcontroller manufactured by Nanjing Qinheng Microelectronics.
+*******************************************************************************/
+
+/*
+ *@Note
+ Timer DMA routines:
+ TIM1_CH1(PA8)
+ This example demonstrates using DMA to output PWM through TIM1_CH1(PA8) pin.
+
+*/
+
+#include "debug.h"
+
+/* CH1CVR register Definition */
+#define TIM1_CH1CVR_ADDRESS    0x40012C34
+
+/* Private variables */
+u16 pbuf[3] = {10, 50, 80};
+
+/*********************************************************************
+ * @fn      TIM1_PWMOut_Init
+ *
+ * @brief   Initializes TIM1 PWM output.
+ *
+ * @param   arr - the period value.
+ *          psc - the prescaler value.
+ *          ccp - the pulse value.
+ *
+ * @return  none
+ */
+void TIM1_PWMOut_Init(u16 arr, u16 psc, u16 ccp)
+{
+    GPIO_InitTypeDef        GPIO_InitStructure = {0};
+    TIM_OCInitTypeDef       TIM_OCInitStructure = {0};
+    TIM_TimeBaseInitTypeDef TIM_TimeBaseInitStructure = {0};
+
+    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_TIM1, ENABLE);
+
+    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8;
+    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
+    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
+    GPIO_Init(GPIOA, &GPIO_InitStructure);
+
+    TIM_TimeBaseInitStructure.TIM_Period = arr;
+    TIM_TimeBaseInitStructure.TIM_Prescaler = psc;
+    TIM_TimeBaseInitStructure.TIM_ClockDivision = TIM_CKD_DIV1;
+    TIM_TimeBaseInitStructure.TIM_CounterMode = TIM_CounterMode_Up;
+    TIM_TimeBaseInitStructure.TIM_RepetitionCounter = 0;
+    TIM_TimeBaseInit(TIM1, &TIM_TimeBaseInitStructure);
+
+    TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM2;
+    TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
+    TIM_OCInitStructure.TIM_Pulse = ccp;
+    TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;
+    TIM_OC1Init(TIM1, &TIM_OCInitStructure);
+
+    TIM_OC1PreloadConfig(TIM1, TIM_OCPreload_Disable);
+    TIM_ARRPreloadConfig(TIM1, ENABLE);
+}
+
+/*********************************************************************
+ * @fn      TIM1_DMA_Init
+ *
+ * @brief   Initializes the TIM DMAy Channelx configuration.
+ *
+ * @param   DMA_CHx -
+ *            x can be 1 to 7.
+ *          ppadr - Peripheral base address.
+ *          memadr - Memory base address.
+ *          bufsize - DMA channel buffer size.
+ *
+ * @return  none
+ */
+void TIM1_DMA_Init(DMA_Channel_TypeDef *DMA_CHx, u32 ppadr, u32 memadr, u16 bufsize)
+{
+    DMA_InitTypeDef DMA_InitStructure = {0};
+
+    RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA1, ENABLE);
+
+    DMA_DeInit(DMA_CHx);
+    DMA_InitStructure.DMA_PeripheralBaseAddr = ppadr;
+    DMA_InitStructure.DMA_MemoryBaseAddr = memadr;
+    DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralDST;
+    DMA_InitStructure.DMA_BufferSize = bufsize;
+    DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
+    DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;
+    DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_HalfWord;
+    DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_HalfWord;
+    DMA_InitStructure.DMA_Mode = DMA_Mode_Circular;
+    DMA_InitStructure.DMA_Priority = DMA_Priority_VeryHigh;
+    DMA_InitStructure.DMA_M2M = DMA_M2M_Disable;
+    DMA_Init(DMA_CHx, &DMA_InitStructure);
+
+    DMA_Cmd(DMA_CHx, ENABLE);
+}
+
+/*********************************************************************
+ * @fn      main
+ *
+ * @brief   Main program.
+ *
+ * @return  none
+ */
+int main(void)
+{
+    USART_Printf_Init(115200);
+    printf("SystemClk:%d\r\n", SystemCoreClock);
+
+    TIM1_PWMOut_Init(100, 48000 - 1, pbuf[0]);
+    TIM1_DMA_Init(DMA1_Channel5, (u32)TIM1_CH1CVR_ADDRESS, (u32)pbuf, 3);
+
+    TIM_DMACmd(TIM1, TIM_DMA_Update, ENABLE);
+    TIM_Cmd(TIM1, ENABLE);
+    TIM_CtrlPWMOutputs(TIM1, ENABLE);
+
+    while(1);
+}