【Follow me第二季第3期】所有任务汇总
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本帖最后由 liubiy 于 2024-12-10 13:53 编辑
一 、视频介绍
资料下载
https://download.eeworld.com.cn/detail/liubiy/635227
二、入门任务：搭建环境，下载调试示例程序，Blink，按键;
/* LED引脚置低电平 LED灯亮 */
#define LED1_ON R_IOPORT_PinWrite(&g_ioport_ctrl, BSP_IO_PORT_00_PIN_06, BSP_IO_LEVEL_HIGH)
#define LED2_ON R_IOPORT_PinWrite(&g_ioport_ctrl, BSP_IO_PORT_00_PIN_07, BSP_IO_LEVEL_HIGH)
#define LED3_ON R_IOPORT_PinWrite(&g_ioport_ctrl, BSP_IO_PORT_00_PIN_08, BSP_IO_LEVEL_HIGH)
/* LED引脚置高电平 LED灯灭 */
#define LED1_OFF R_IOPORT_PinWrite(&g_ioport_ctrl, BSP_IO_PORT_00_PIN_06, BSP_IO_LEVEL_LOW)
#define LED2_OFF R_IOPORT_PinWrite(&g_ioport_ctrl, BSP_IO_PORT_00_PIN_07, BSP_IO_LEVEL_LOW)
#define LED3_OFF R_IOPORT_PinWrite(&g_ioport_ctrl, BSP_IO_PORT_00_PIN_08, BSP_IO_LEVEL_LOW)
/* 使用寄存器来实现 LED灯翻转 */
#define LED1_TOGGLE R_PORT0->PODR ^= 1<<(BSP_IO_PORT_00_PIN_06 & 0xFF)
#define LED2_TOGGLE R_PORT0->PODR ^= 1<<(BSP_IO_PORT_00_PIN_07 & 0xFF)
#define LED3_TOGGLE R_PORT0->PODR ^= 1<<(BSP_IO_PORT_00_PIN_08 & 0xFF)
/* 两个按键引脚定义 */
#define KEY1_SW2_PIN BSP_IO_PORT_00_PIN_04
#define KEY2_SW3_PIN BSP_IO_PORT_00_PIN_05
/* 按键扫描函数（阻塞式）
* key: KEY1_SW2_PIN 用户按键1
* KEY2_SW3_PIN 用户按键2
*/
uint32_t Key_Scan(bsp_io_port_pin_t key)
{
bsp_io_level_t state;
// 读取按键引脚电平
R_IOPORT_PinRead(&g_ioport_ctrl, key, &state);
if (BSP_IO_LEVEL_HIGH == state)
{
return KEY_OFF; //按键没有被按下
}
else
{
do //等待按键释放
{
R_IOPORT_PinRead(&g_ioport_ctrl, key, &state);
} while (BSP_IO_LEVEL_LOW == state);
}
return KEY_ON; //按键被按下了
}
三、基础任务：quad-spi flash和octo-spi flash配置及读写速度测试；DAC配置生成波形及性能测试;
电脑通过USB连接开发板的USB接口，再e2 studio打开终端。再将示波器连接P014口。
1，quad-spi flash和octo-spi flash配置及读写速度测试：使用的是例程中的测试代码：
下载quickstart_ek_ra6m5_ep的代码，连接USB ，打开终端，选择flash速度对吧
运行结果：
运行的部分代码：
sprintf(s_print_buffer, "\r\n\r\nGenerated a text block of %2lu KB in SRAM\r\n", block_size_actual);
/* ignoring -Wpointer-sign is OK when treating signed char_t array as as unsigned */
print_to_console((void*)s_print_buffer);
/* ignoring -Wpointer-sign is OK for a constant string */
print_to_console((uint8_t *)
"\r\nWriting the text block to external Quad-SPI and Octo-SPI flash memories...\r\n");
uint32_t ospi_performance_write_result = 0;
uint32_t ospi_performance_read_result = 0;
uint32_t timer_frequency;
R_GPT_InfoGet(g_memory_performance.p_ctrl, &timer_info);
timer_frequency = timer_info.clock_frequency;
ospi_performance_test (block_size_actual, &ospi_performance_write_result, &ospi_performance_read_result);
/* Multiply uSec calcs by 100, to avoid losses due to small results in integer maths
* Scaled to fit within uint32_t */
ospi_write_result = ((100000000 / timer_frequency) * ospi_performance_write_result) / 100;
qspi_write_result = ((100000000 / timer_frequency) * qspi_write_test(block_size_actual)) / 100;
/* ignoring -Wpointer-sign is OK for a constant string */
print_to_console((uint8_t *)"Writing to flash completed\r\n");
/* ignoring -Wpointer-sign is OK for a constant string */
print_to_console((uint8_t *)"\r\nReading the text block from external Quad-SPI and Octo-SPI flash memories...\r\n");
ospi_read_result = ((100000000 / timer_frequency) * ospi_performance_read_result) / 100;
qspi_read_result = ((100000000 / timer_frequency) * qspi_read_test(block_size_actual)) / 100;
/* ignoring -Wpointer-sign is OK for a constant string */
print_to_console((uint8_t *)"Reading from flash completed\r\n");
R_GPT_Close(g_memory_performance.p_ctrl);
/* Handle error */
if (FSP_SUCCESS != fsp_err)
{
/* Fatal error */
SYSTEM_ERROR
}
2，DAC配置生成波形及性能测试：
下载自己写的代码（01_Uart_Led_Key），连接P014发出的波形。
DAC的配置：
生成波形的代码：
if(Key_Scan(KEY1_SW2_PIN)==KEY_ON){
frequency = frequency + 20;
if(frequency >= 200){frequency = 50;};
}
if(Key_Scan(KEY2_SW3_PIN)==KEY_ON){
mode++;
if(mode == 4){mode = 0;}
}
Time = Time + 0.1f;if(Time > 200){Time = 0;}
if(mode == 1){
DAC_Value = (uint16_t)(( sin(2 * M_PI * frequency * Time) + 1 ) / 2 * 4095);
}else if(mode == 2){
DAC_Value = (uint16_t)( ( 2 / M_PI * asin(sin(2 * M_PI / frequency * Time)) + 1 ) * 4095 );
}else if(mode == 2){
Time1 = Time1 + 0.01f;
if(Time1 > 200){Time1 = 0;}
DAC_Value = (uint16_t)( (1-exp(-Time1/frequency)) * 4095 );
}else{
DAC_Value = (uint16_t)(2047);
}
R_DAC_Write(&g_dac0_ctrl, DAC_Value);
四、进阶任务：示例程序中新增命令打印信息;
实现一个：显示DAC频率和模式的参数：
修改的是例程中的测试代码：
添加一下显示界面的函数{"Task Information" , Task_display_menu}
/* Table of menu functions */
static st_menu_fn_tbl_t s_menu_items[] =
{
{"Task Information" , Task_display_menu},
{"Kit Information" , kis_display_menu},
{"Web Server" , eth_emb_display_menu},
{"Network Name Lookup" , eth_www_display_menu},
{"Quad-SPI and Octo-SPI Speed Comparison" , ext_display_menu},
{"Cryptography and USB High speed (MSC)" , enc_display_menu},
{"Next Steps", ns_display_menu },
{"", NULL }
};
在menu_kis.c中添加
extern uint8_t frequency;
extern uint8_t mode;
#define TASK_NAME "\r\n%d. Signal Generator Task\r\n"
#define SUB_TASK "\r\n\x1b[2m\x1b[37m a) Kit name: " \
"\r\n\x1b[2m\x1b[37m b) Kit ordering part number: " \
"\r\n\x1b[2m\x1b[37m c) RA Device part number: " \
"\r\n\x1b[2m\x1b[37m d) RA MCU 128-bit Unique ID (hex): " \
" " \
"\r\n\x1b[2m\x1b[37m e) RA MCU Die temperature (F/C): " \
"\r\n\x1b[2m\x1b[37m f) Blue LED blinking frequency (Hz): " \
"\r\n\x1b[2m\x1b[37m g) Blue LED blinking intensity (%%%%): " \
"\r\n\x1b[2m\x1b[37m h) Waveform mode (mode1:sine wave): \x1b[32m%d\x1b[37m " \
"\r\n\x1b[2m\x1b[37m l) Waveform frequency (Hz): \x1b[32m%d\x1b[37m " \
test_fn Task_display_menu(void)
{
int8_t c = -1;
sprintf (s_print_buffer, "%s%s", gp_clear_screen, gp_cursor_home);
print_to_console((void*)s_print_buffer);
sprintf (s_print_buffer, TASK_NAME, g_selected_menu);
print_to_console((void*)s_print_buffer);
sprintf (s_print_buffer, SUB_TASK, mode, frequency);
print_to_console((void*)s_print_buffer);
sprintf (s_print_buffer, MENU_RETURN_INFO);
print_to_console((void*)s_print_buffer);
vTaskDelay (s_ticks_to_wait);
xEventGroupSetBits (g_update_console_event, STATUS_DISPLAY_MENU_KIS);
while (CONNECTION_ABORT_CRTL != c)
{
c = input_from_console ();
if ((MENU_EXIT_CRTL == c) || (CONNECTION_ABORT_CRTL == c))
{
break;
}
}
xEventGroupClearBits (g_update_console_event, STATUS_DISPLAY_MENU_KIS);
return (0);
}
再添加头文件，就可以显示了
五、扩展任务：设计一个类似信号发生器功能的例程。
项目简介：
实现信号发生器功能，通过命令或按键，设置DAC输出波形，可通过flash存储历史波形等信息。
全部物料清单（含物料名称、实物图片）：
用到了示波器，USB线，USB串口，开发板。
软件流程图：
关键代码：
/*
按键和FALSH存储代码
*/
if(Key_Scan(KEY1_SW2_PIN)==KEY_ON){
frequency = frequency + 20;
if(frequency >= 200){frequency = 50;};
Write_Data[0] = frequency;
err = erase_and_blankcheck(ospi_ref_addr);
if(FSP_SUCCESS != err)
{
sprintf(test_str, "ERR erase_and_blankcheck: %d\n",err);
R_SCI_UART_Write(&g_uart4_ctrl, (uint8_t const * const)test_str, strlen(test_str));
R_BSP_SoftwareDelay(10u, BSP_DELAY_UNITS_MILLISECONDS);
}
// Write Data
err = R_OSPI_Write(&g_ospi_ctrl, Write_Data, ospi_ref_addr, (uint32_t)(OSPI_DATA_SIZE));
wait_operation();
if(FSP_SUCCESS != err)
{
sprintf(test_str, "** R_OSPI_Write API failed in SPI Operation **\r\n");
R_SCI_UART_Write(&g_uart4_ctrl, (uint8_t const * const)test_str, strlen(test_str));
R_BSP_SoftwareDelay(10u, BSP_DELAY_UNITS_MILLISECONDS);
}
sprintf(test_str, "** frequency_success:%d **\r\n",frequency);
R_SCI_UART_Write(&g_uart4_ctrl, (uint8_t const * const)test_str, strlen(test_str));
R_BSP_SoftwareDelay(10u, BSP_DELAY_UNITS_MILLISECONDS);
}
if(Key_Scan(KEY2_SW3_PIN)==KEY_ON){
mode++;
if(mode == 4){mode = 0;}
Write_Data[1] = mode;
err = erase_and_blankcheck(ospi_ref_addr);
if(FSP_SUCCESS != err)
{
sprintf(test_str, "ERR erase_and_blankcheck: %d\n",err);
R_SCI_UART_Write(&g_uart4_ctrl, (uint8_t const * const)test_str, strlen(test_str));
R_BSP_SoftwareDelay(10u, BSP_DELAY_UNITS_MILLISECONDS);
}
// Write Data
err = R_OSPI_Write(&g_ospi_ctrl, Write_Data, ospi_ref_addr, (uint32_t)(OSPI_DATA_SIZE));
wait_operation();
if(FSP_SUCCESS != err)
{
sprintf(test_str, "** R_OSPI_Write API failed in SPI Operation **\r\n");
R_SCI_UART_Write(&g_uart4_ctrl, (uint8_t const * const)test_str, strlen(test_str));
R_BSP_SoftwareDelay(10u, BSP_DELAY_UNITS_MILLISECONDS);
}
sprintf(test_str, "** mode_success:%d **\r\n",mode);
R_SCI_UART_Write(&g_uart4_ctrl, (uint8_t const * const)test_str, strlen(test_str));
R_BSP_SoftwareDelay(10u, BSP_DELAY_UNITS_MILLISECONDS);
}
生成波形的代码：
Time = Time + 1;if(Time > 20000){Time = 0;}
if(mode == 1){ //sin()
DAC_Value = (uint16_t)(( sin(2 * M_PI / frequency * Time) + 1 ) / 2 * 4095);
}else if(mode == 2){ //3angle
DAC_Value = (uint16_t)( ( 2 / M_PI * asin(sin(2 * M_PI / frequency * Time)) + 1 ) * 4095 );
}else if(mode == 2){
Time1 = Time1 + 1;
if(Time1 > 20000){Time1 = 0;}
DAC_Value = (uint16_t)( (1-exp(-Time1/frequency)) * 4095 );
}else{
DAC_Value = (uint16_t)(2047);
}
R_DAC_Write(&g_dac0_ctrl, DAC_Value);
六、心得体会
在制作DAC信号发生器的过程中，我深入了解了数字模拟转换器（DAC）的工作原理和在信号生成中的应用。通过设计和实现这个项目，我不仅提升了对嵌入式系统的理解，也对硬件和软件之间的协作有了更深刻的体会。在实际操作中，我学习了如何通过编程控制DAC输出不同频率和幅度的信号，掌握了与硬件通信、调试和优化程序的技巧。
项目中，我遇到了不少挑战，特别是在信号精度和稳定性方面。通过不断调整硬件设置和优化代码，我逐步解决了这些问题，成功实现了预定的功能。这不仅提高了我的动手能力，还让我对嵌入式系统中信号处理的细节有了更多的了解。总的来说，制作DAC信号发生器的过程让我收获颇丰，也让我更加坚定了未来继续深入嵌入式开发的决心。
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