- 评测RA2E1，收到的开发板是RA-Eco-RA2L1-48PIN
- 没有接外部高速晶振，有外部低速晶振
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主芯片R7FA2L1AB2DFL LQFP的封装
浅谈各种常见的芯片封装技术DIP/SOP/QFP/PGA/BGA https://blog.csdn.net/LEON1741/article/details/104783084
使用需要短接mode的1,2引脚，使用normal工作模式
下载器J-LINK
IDE安装与工程创建参考
【瑞萨 RA2E1】+e2studio软件下载、安装和创建工程：点亮一个LED https://mbb.eet-china.com/forum/topic/126703_1_1.html
示例程序和原理图 https://gitee.com/ramcu/ra-eco-ra2-l1-48-pin
2.LED闪烁
- 时钟
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XTAL 外部时钟
SUBCLK 外部低速时钟，在低功耗模式下可以作为主时钟
板子没有焊接高速外部时钟， 这里使用片内高速时钟作为主时钟
时钟初始化和外设初始化在SystemInit函数里
裸机程序在hal_entry函数里添加用户程序
RTOS在main函数里添加
LED 100ms交替闪烁的程序
* 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) { /* TODO: add your own code here */ while(1) { R_IOPORT_PinWrite(&g_ioport_ctrl, LED1, BSP_IO_LEVEL_HIGH); R_IOPORT_PinWrite(&g_ioport_ctrl, LED2, BSP_IO_LEVEL_LOW); R_BSP_SoftwareDelay(100, BSP_DELAY_UNITS_MILLISECONDS); R_IOPORT_PinWrite(&g_ioport_ctrl, LED1, BSP_IO_LEVEL_LOW); R_IOPORT_PinWrite(&g_ioport_ctrl, LED2, BSP_IO_LEVEL_HIGH); R_BSP_SoftwareDelay(100, BSP_DELAY_UNITS_MILLISECONDS); } #if BSP_TZ_SECURE_BUILD /* Enter non-secure code */ R_BSP_NonSecureEnter(); #endif }
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Interrupt Controller Unit (ICU) 中断控制器单元(ICU)控制哪些事件信号连接到嵌套矢量中断控制器(NVIC)和数据传输控制器(DTC)模块。ICU还控制不可屏蔽中断。
Key Interrupt Function (KINT)按键中断函数(KINT)通过检测按键中断输入引脚上的上升沿或下降沿来产生按键中断。
KINT只有P100,P101,P102,P103,P1045个引脚使用
这个板子使用的是P015作为按键，所以使用ICU
ICU设置
在stacks里新建stack,在下方的属性里设置触发电平，使能数字滤波，编写中断函数名字
实现按键按下后，led灯翻转代码如下：
#include "hal_data.h"#define USER_SW_IRQ_NUMBER (0x07) //EK_RA2L1 and EK_RA2E1 board /* Boolean flag to determine switch is pressed or not.*/ volatile bool g_sw_press = false; FSP_CPP_HEADER void 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) { /* TODO: add your own code here */ // fsp_err_t err = FSP_SUCCESS; bsp_io_level_t led_current_state = (bsp_io_level_t) 0x01; /* Initialize External IRQ driver*/ /* Enable External IRQ driver*/ R_ICU_ExternalIrqOpen(&g_external_irq_ctrl, &g_external_irq_cfg); R_ICU_ExternalIrqEnable(&g_external_irq_ctrl); /* Main loop */ while (true) { /* Toggle user LED when user pushbutton is pressed*/ if(true == g_sw_press) { /* Clear user pushbutton flag */ g_sw_press = false; /* Read user LED pin */ R_IOPORT_PinRead(&g_ioport_ctrl, LED1, &led_current_state); /* Reverse LED pin state*/ led_current_state ^= BSP_IO_LEVEL_HIGH; /* Toggle user LED */ R_IOPORT_PinWrite(&g_ioport_ctrl, LED1, led_current_state); R_IOPORT_PinRead(&g_ioport_ctrl, LED2, &led_current_state); led_current_state ^= BSP_IO_LEVEL_HIGH; R_IOPORT_PinWrite(&g_ioport_ctrl, LED2, led_current_state); } } #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); } } /*******************************************************************************************************************//** * @brief User defined external irq callback. * @param[IN] p_args * @retval None **********************************************************************************************************************/ void irq_ep_callback(external_irq_callback_args_t *p_args) { /* Make sure it's the right interrupt*/ if(USER_SW_IRQ_NUMBER == p_args->channel) { g_sw_press = true; } } #if BSP_TZ_SECURE_BUILD BSP_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
复制代码3.定时器控制LED
[color=rgba(0, 0, 0, 0.75)]
R7FA2L1AB2DFP定时器有PWM和通用定时器，看门狗定时器
这里使用通用定时器,定时器是低功耗的
[color=rgba(0, 0, 0, 0.75)]
通用定时器的设置如下：
定时器计数时间到了之后，翻转LED，可以使用R_AGT_PeriodSet重新设置翻转led的时间
void hal_entry(void){ /* TODO: add your own code here */ fsp_err_t err = FSP_SUCCESS; // unsigned char rByte[BUFFER_SIZE_DOWN] = {RESET_VALUE}; uint32_t time_period_ms_oneshot = RESET_VALUE; uint32_t time_period_ms_periodic = RESET_VALUE; uint32_t raw_counts_oneshot = RESET_VALUE; uint32_t raw_counts_periodic = RESET_VALUE; timer_info_t one_shot_info = { .clock_frequency = RESET_VALUE, .count_direction = (timer_direction_t) RESET_VALUE, .period_counts = RESET_VALUE, }; timer_info_t periodic_info = { .clock_frequency = RESET_VALUE, .count_direction = (timer_direction_t) RESET_VALUE, .period_counts = RESET_VALUE, }; uint32_t clock_freq = RESET_VALUE; /* Initialize AGT driver */ R_AGT_Open(&g_timer_one_shot_ctrl, &g_timer_one_shot_cfg); /* Open Timer1 in Periodic mode */ R_AGT_Open(&g_timer_periodic_ctrl, &g_timer_periodic_cfg); time_period_ms_oneshot = 2000; /*设置LED灯闪烁时间，单位是毫秒*/ time_period_ms_periodic = 100; /* Calculation of raw counts value for given milliseconds value */ err = R_AGT_InfoGet(&g_timer_periodic_ctrl, &periodic_info); /* Handle error */ if(FSP_SUCCESS != err) { R_AGT_Close(&g_timer_one_shot_ctrl); R_AGT_Close(&g_timer_periodic_ctrl); } /* Depending on the user selected clock source, raw counts value can be calculated * for the user given time-period values */ clock_freq = periodic_info.clock_frequency; raw_counts_periodic = (uint32_t)((time_period_ms_periodic * clock_freq ) / 1000); /* Set period value */ err = R_AGT_PeriodSet(&g_timer_periodic_ctrl, raw_counts_periodic); /* Handle error */ if (FSP_SUCCESS != err) { R_AGT_Close(&g_timer_one_shot_ctrl); R_AGT_Close(&g_timer_periodic_ctrl); } R_AGT_Start(&g_timer_periodic_ctrl); for(;;) { } }
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