【极海APM32F030R8 MINI开发板试用体验】+官方dma接收usart程序软件

开发板

接【极海APM32F030R8 MINI开发板免费试用】+官方adc程序
由于极海APM32F030R8 MINI开发板的外设资源极为丰富，准备使用计算机com口通讯来交流控制及数据信息。

安装

APM32F0xx_SDK解包，厂家dma程序（使用板•UART: 1和计算机com3））
到H:geehyAPM32F0xx_SDK_v1.2APM32F0xx_SDK_v1.2ExamplesDMADMA_UsartProjectMDK目录打开DMA_USART.UVprojx厂家示例文件，改为能显示数据及hex码。
编译下载，此板只有两个灯快闪。

更改厂家代码为：

/*!
* [url=home.php?mod=space&uid=1455510]@file[/url] main.c
*
* [url=home.php?mod=space&uid=2666770]@Brief[/url] Main program body
*
* [url=home.php?mod=space&uid=644434]@version[/url] V1.0.0
*
* @date 2020-11-9
*/
#include "Board_APM32F030_MINI.h"
#include "stdio.h"
#include "apm32f0xx_gpio.h"
#include "apm32f0xx_misc.h"
#include "apm32f0xx_eint.h"
#include "apm32f0xx_dma.h"
#include "apm32f0xx_syscfg.h"
/** Set Buff Size */
#define BufSize 0xFF
///** USART TX Buf*/
//uint8_t DMA_USART_TxBuf[BufSize];
/** USART RX Buf*/
uint8_t DMA_USART_RxBuf[BufSize];
uint32_t pro;
/** printf function configs to USART1*/
#define DEBUG_USART USART1
/** Delay */
void Delay(void);
/** USART Init */
void USART1_Init(void);
/** DMA_USART_Rx Init */
void DMA_Rx_Init(uint32_t* RxBuf);
///** compare Buffer */
//BOOL BufferCompare(uint8_t* buf1, uint8_t* buf2, uint8_t size);
/*!
* @brief Main program
*
* [url=home.php?mod=space&uid=3142012]@param[/url] None
*
* @retval None
*
* @note
*/
int main(void)
{
uint8_t i;
APM_MINI_LEDInit(LED2);
APM_MINI_LEDInit(LED3);
APM_MINI_LEDOn(LED2);
APM_MINI_LEDOn(LED3);
APM_MINI_COMInit(COM2);
USART1_Init();
// /** Init TxBuf*/
// for (int i = 0; i
// {
// DMA_USART_TxBuf[i] = i;
// }
/** Config channel5 of DMA */
DMA_Disable(DMA_CHANNEL_5);
DMA_Rx_Init((uint32_t *)DMA_USART_RxBuf);
USART_EnableDMA(USART1, USART_DMA_REQUEST_RX);
// /** data from usart2 send to usart1 */
// for (int i = 0; i
// {
// /** USART send data*/
// while (USART_ReadStatusFlag(USART2, USART_FLAG_TXBE)==RESET);
//
// USART_TxData(USART2, DMA_USART_TxBuf[i]);
// }
//
// /* Data is ok then turn off LED2 */
// if (BufferCompare(DMA_USART_TxBuf, DMA_USART_RxBuf, BufSize) != FALSE)
// {
// APM_MINI_LEDOff(LED2);
// }
//
printf("DMA" );
for (;;)
{
APM_MINI_LEDToggle(LED2);
APM_MINI_LEDToggle(LED3);
Delay();
pro=DMA_ReadDataNumber(DMA_CHANNEL_5);/** DMA_GetCurrDataCounter(DMA_CHANNEL_5); */
// printf("rn pro = %d rn", pro);
if(0xFF-pro)
{
for(i=0;i<(0xFF-pro);i++)//填充
{
printf("%c",DMA_USART_RxBuf[i]);
}
for(i=0;i<(0xFF-pro);i++)//填充
{
printf("%d",DMA_USART_RxBuf[i]);
}
DMA_Disable(DMA_CHANNEL_5);
DMA_Rx_Init((uint32_t *)DMA_USART_RxBuf);
USART_EnableDMA(USART1, USART_DMA_REQUEST_RX);
}
}
}
/*!
* @brief USART Configuration
*
* @param None
*
* @retval None
*
* @note
*/
void USART1_Init()
{
APM_MINI_COMInit(COM1);
/** Enable SYSCFG Clock for Remaping DMA Channel*/
RCM_EnableAPB2PeriphClock(RCM_APB2_PERIPH_SYSCFG);
/** Remap USART1_RX Channel to DMA channel 5*/
SYSCFG_EnableDMAChannelRemap(SYSCFG_DAM_REMAP_USART1RX);
}
/*!
* @brief DMA usart receive Init
*
* @param None
*
* @retval None
*
* @note
*/
void DMA_Rx_Init(uint32_t* RxBuf)
{
/** Enable DMA clock */
RCM_EnableAHBPeriphClock(RCM_AHB_PERIPH_DMA1);
/** DMA Configure */
DMA_Config_T dmaConfig;
/** size of buffer*/
dmaConfig.bufferSize = BufSize;
/** set memory Data Size*/
dmaConfig.memoryDataSize = DMA_MEMORY_DATASIZE_BYTE;
/** Set peripheral Data Size*/
dmaConfig.peripheralDataSize = DMA_PERIPHERAL_DATASIZE_BYTE;
/** Enable Memory Address increase*/
dmaConfig.memoryInc = DMA_MEMORY_INC_ENABLE;
/** Disable Peripheral Address increase*/
dmaConfig.peripheralInc = DMA_PERIPHERAL_INC_DISABLE;
/** Reset Circular Mode*/
dmaConfig.circular = DMA_CIRCULAR_DISABLE;
/** Disable M2M*/
dmaConfig.memoryTomemory = DMA_M2M_DISABLE;
/** set priority*/
dmaConfig.priority = DMA_PRIORITY_LEVEL_HIGHT;
/** read from memory*/
dmaConfig.direction = DMA_DIR_PERIPHERAL;
/** Set memory Address*/
dmaConfig.memoryAddress = (uint32_t)RxBuf;
/** Set Peripheral Address*/
dmaConfig.peripheralAddress = (uint32_t)&USART1->RXDATA;
DMA_Config(DMA_CHANNEL_5, &dmaConfig);
/** Clear DMA TF flag*/
DMA_ClearIntFlag(DMA_INT_FLAG_TF5);
/** Enable DMA Interrupt*/
DMA_EnableInterrupt(DMA_CHANNEL_5, DMA_INT_TFIE);
NVIC_EnableIRQRequest(DMA1_Channel4_5_IRQn, 2);
USART_ClearStatusFlag(USART1, USART_FLAG_TXC);
DMA_Enable(DMA_CHANNEL_5);
}
/*!
* @brief Compares two buffers
*
* @param buf1: First buffer to be compared
*
* @param buf1: Second buffer to be compared
*
* @param size: Buffer size
*
* @retval Return TRUE if buf1 = buf2. If not then return FALSE
*
* @note
*/
BOOL BufferCompare(uint8_t* buf1, uint8_t* buf2, uint8_t size)
{
uint8_t i;
for (i = 0; i < size; i++)
{
if (buf1[i] != buf2[i])
{
return FALSE;
}
}
return TRUE;
}
/*!
* @brief DMA_Interrupt
*
* @param None
*
* @retval None
*
* @note
*/
void DMA_Isr(void)
{
if (DMA_ReadStatusFlag(DMA_FLAG_TF5))
{
/** do something*/
DMA_ClearStatusFlag(DMA_FLAG_TF5);
}
}
/*!
* @brief Delay
*
* @param None
*
* @retval None
*
* @note
*/
void Delay(void)
{
volatile uint32_t delay = 0x3ffff;
while (delay--);
}
/*!
* @brief Redirect C Library function printf to serial port.
* After Redirection, you can use printf function.
*
* @param ch: The characters that need to be send.
*
* @param *f: pointer to a FILE that can recording all information
* needed to control a stream
*
* @retval The characters that need to be send.
*
* @note
*/
int fputc(int ch, FILE *f)
{
/** send a byte of data to the serial port */
USART_TxData(DEBUG_USART,(uint8_t)ch);
/** wait for the data to be send */
while (USART_ReadStatusFlag(DEBUG_USART, USART_FLAG_TXBE) == RESET);
return (ch);
}

复制代码

编译结果

Rebuild started: Project: DMA_USART
*** Using Compiler 'V5.06 update 6 (build 750)', folder: 'g:Keil_v5ARMARMCCBin'
Rebuild target 'APM32F030'
assembling startup_apm32f030x8.s...
compiling system_apm32f0xx.c...
compiling apm32f0xx_eint.c...
compiling apm32f0xx_gpio.c...
compiling apm32f0xx_rcm.c...
compiling apm32f0xx_usart.c...
compiling apm32f0xx_misc.c...
compiling apm32f0xx_adc.c...
compiling apm32f0xx_dma.c...
compiling apm32f0xx_syscfg.c...
compiling Board.c...
compiling main.c...
compiling apm32f0xx_int.c...
linking...
Program Size: Code=3216 RO-data=276 RW-data=48 ZI-data=1280
".OutAPM32F030APM32F030_DMA_USART.axf" - 0 Error(s), 0 Warning(s).
Build Time Elapsed:  00:00:05
Load "H:\geehy\APM32F0xx_SDK_v1.2\APM32F0xx_SDK_v1.2\Examples\DMA - uart1\DMA_Usart\Project\MDK\Out\APM32F030\APM32F030_DMA_USART.axf"
Dll Verison 1.06  Build date: 2019-06-23
Emulaor: MM32-LINK, SN: 0023557, Hardware: A, Firmware: 1.23
Manufacturer: MindMotion, Date: 2020-01-08
Appliaction: MM32-LINK, Version: 1.51
Connect Mode SWD, Speed Auto
Out put voltage 3.33V, current 0.00mA, target voltage 0.00V
Found SWD-DP with ID 0x410CC601
Found Cortex-M0 r0p1, Little endian
FPUnit: 4 code (BP) slots and 0 literal slots
Data Watchpoint: 2
Erase Done.
Programming Done.
Verify OK.
Flash Load finished at 11:53:30

com3口接收到数据：

发送12时

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