【瑞萨RA4系列开发板体验】keil重写printf

lugl · 发表于 2022-12-10 07:49:48

昨天重装了一下e2_studio，结果Renesas_Flash_Programmer死活装不上了，安装时提示已经安装，注册表也有一万个安装，删也删不完。考虑还是用回到MDK。参照@ jf_92517703大佬的作品，我这里重新写了一遍printf。
这里配置用SCI9来做debug，这样就不用外接uatr转TTL了。
1、先配置systemDBUG,这样才可以选择SCI9

2、SCI9选择如下图：

3、Stack启用UART

4、修改通道数、回调函数：

5、选择PIN为输出到板载的CH340G

6、最后生成keil工程后，找到目录，打开工程：

7、新建bsp_debug_uart.c、bsp_debug_uart.h(大部分是抄@ jf_92517703）部分做了修改：
bsp_debug_uart.c:

#include "bsp_debug_uart.h"/* 调试串口 UART4 初始化 */void bsp_uart_init(void){ fsp_err_t err = FSP_SUCCESS; err = R_SCI_UART_Open (&g_uart9_ctrl, &g_uart9_cfg); assert(FSP_SUCCESS == err);}/* 发送完成标志 */volatile bool uart_send_complete_flag = false;/* 串口中断回调 */void user_uart_callback (uart_callback_args_t * p_args){ switch (p_args->event) { case UART_EVENT_RX_CHAR: { /* 把串口接收到的数据发送回去 */ R_SCI_UART_Write(&g_uart9_ctrl, (uint8_t *)&(p_args->data), 1); break; } case UART_EVENT_TX_COMPLETE: { uart_send_complete_flag = true; break; } default: break; }} /* 重定向 printf 输出 */#if defined __GNUC__ && !defined __clang__int _write(int fd, char *pBuffer, int size); //防止编译警告int _write(int fd, char *pBuffer, int size){ (void)fd; R_SCI_UART_Write(&g_uart0_ctrl, (uint8_t *)pBuffer, (uint32_t)size); while(uart_send_complete_flag == false); uart_send_complete_flag = false; return size;}#elseint fputc(int ch, FILE *f){ (void)f; R_SCI_UART_Write(&g_uart9_ctrl, (uint8_t *)&ch, 1); while(uart_send_complete_flag == false); uart_send_complete_flag = false; return ch;}#endif

bsp_debug_uart.h

#ifndef __BSP_UART_H__#define __BSP_UART_H__#include "hal_data.h"#include "stdio.h"void bsp_uart_init(void);#endif

8、然后在keil下新建目录user，并把bsp_debug_uart.c加进去：

9、hal_enty.c主程序如下：

#include "hal_data.h"#include <stdio.h>#include "bsp_debug_uart.h"FSP_CPP_HEADERvoid R_BSP_WarmStart(bsp_warm_start_event_t event);FSP_CPP_FOOTER/*******************************************************************************************************************//** * main() is generated by the RA Configuration editor and is used to generate threads if an RTOS is used. This function * is called by main() when no RTOS is used. **********************************************************************************************************************/void hal_entry(void){ bsp_uart_init(); char char_i[]="hello e2studio"; int int_i=55; float float_i=66.20f; printf("hello RA4\r\n"); while(1) { printf("int_i=%d\n",int_i); printf("float_i=%.2f\n",float_i); printf("char_i='%s'\n",char_i); R_BSP_SoftwareDelay(1000, BSP_DELAY_UNITS_MILLISECONDS); // NOLINT100->160 }#if BSP_TZ_SECURE_BUILD /* Enter non-secure code */ R_BSP_NonSecureEnter();#endif}/*******************************************************************************************************************//** * This function is called at various points during the startup process. This implementation uses the event that is * called right before main() to set up the pins. * * @param[in] event Where at in the start up process the code is currently at **********************************************************************************************************************/void R_BSP_WarmStart (bsp_warm_start_event_t event){ if (BSP_WARM_START_RESET == event) {#if BSP_FEATURE_FLASH_LP_VERSION != 0 /* Enable reading from data flash. */ R_FACI_LP->DFLCTL = 1U; /* Would normally have to wait tDSTOP(6us) for data flash recovery. Placing the enable here, before clock and * C runtime initialization, should negate the need for a delay since the initialization will typically take more than 6us. */#endif } if (BSP_WARM_START_POST_C == event) { /* C runtime environment and system clocks are setup. */ /* Configure pins. */ R_IOPORT_Open(&g_ioport_ctrl, g_ioport.p_cfg); }}#if BSP_TZ_SECURE_BUILDBSP_CMSE_NONSECURE_ENTRY void template_nonsecure_callable ();/* Trustzone Secure Projects require at least one nonsecure callable function in order to build (Remove this if it is not required to build). */BSP_CMSE_NONSECURE_ENTRY void template_nonsecure_callable (){}#endif

10、接DAPlink接到SWD、SCK接品上，下载程序就可以了，运行效果如图：

【感受】由于没有钱买jlink10，还是用Keil+DAPlink比较好。学习了前面大佬的作品，自己才能入门。