基于瑞萨FPB-RA4E2智能床头灯项目——1编译环境搭建与点亮驱动ws2812全彩LED

先看效果：

下载安装e2后安装FSP后即可新建项目：

选择匹配的芯片类型：RA4E2

选择默认选项

选择无RTOS模式：

选择默认即可：

新建文件夹：放ws2812驱动底层代码

文件夹分别是C文件和H文件

bsp_ws2812LED.c代码

/*

 * ws2812.c

 *

 *  Created on: 2023年10月31日

 *      Author: Administrator

 */



#include"bsp_ws2812LED.h"

#include"hal_data.h"

externfsp_err_t err ;

externvolatile bool g_transfer_complete ;



//灯条显存SPI数据缓存

uint8_t gWs2812bDat_SPI[WS2812B_AMOUNT *24+88]={0};

//灯条显存

tWs2812bCache_TypeDef gWs2812bDat[WS2812B_AMOUNT]={



//R    G      B

0XFF,0X00,0X00,//0

0X00,0XFF,0X00,//1

0X00,0X00,0XFF,//2

0X00,0XFF,0XFF,//3

0XFF,0X00,0XFF,//4

0XFF,0XFF,0X00,//5

0XFF,0XFF,0XFF,//6

0X0F,0X0F,0X0F,//7



0XFF,0X00,0X00,//0

0X00,0XFF,0X00,//1

0X00,0X00,0XFF,//2

0X00,0XFF,0XFF,//3

0XFF,0X00,0XFF,//4

0XFF,0XFF,0X00,//5

0XFF,0XFF,0XFF,//6

0X0F,0X0F,0X0F,//7





};



voidWS2812b_Set(uint16_tWs2b812b_NUM,uint8_tr,uint8_tg,uint8_tb)

{

uint8_t*pR=&gWs2812bDat_SPI[88+(Ws2b812b_NUM)*24+8];

uint8_t*pG=&gWs2812bDat_SPI[88+(Ws2b812b_NUM)*24];

uint8_t*pB=&gWs2812bDat_SPI[88+(Ws2b812b_NUM)*24+16];



for(uint8_ti=0;i<8;i++){

if(g&0x80){

*pG= CODE_1;

}

else{

*pG= CODE_0;

}

if(r&0x80){

*pR= CODE_1;

}

else{

*pR= CODE_0;

}

if(b&0x80){

*pB= CODE_1;

}

else{

*pB= CODE_0;

}

r<<=1;

g<<=1;

b<<=1;

pR++;

pG++;

pB++;

}

}

voidWS2812B_Task(void)

{

uint8_tdat=0;

for(inti=0;i<88;i++)

{

        gWs2812bDat_SPI[i]=0;



}

//将gWs2812bDat数据解析成SPI数据

for(uint8_tiLED=0;iLED< WS2812B_AMOUNT;iLED++)

{

WS2812b_Set(iLED, gWs2812bDat[iLED].R, gWs2812bDat[iLED].G, gWs2812bDat[iLED].B);

}

//总线输出数据



/* Send the reset command */

    g_transfer_complete = false;

    err =R_SCI_SPI_Write(&g_spi0_ctrl, gWs2812bDat_SPI,sizeof(gWs2812bDat_SPI),SPI_BIT_WIDTH_8_BITS);

    assert(FSP_SUCCESS== err);

/* Wait for SPI_EVENT_TRANSFER_COMPLETE callback event. */

while(  g_transfer_complete==false)

{

;

}

//    //使总线输出低电平

//    g_transfer_complete = false;

//     err = R_SCI_SPI_Write(&g_spi0_ctrl, dat, 1, SPI_BIT_WIDTH_8_BITS);

//     assert(FSP_SUCCESS == err);

//     /* Wait for SPI_EVENT_TRANSFER_COMPLETE callback event. */

//     while (  g_transfer_complete==false)

//     {

//         ;

//     }



//帧信号：一个大于50us的低电平

R_BSP_SoftwareDelay(1,BSP_DELAY_UNITS_MILLISECONDS);

}

bsp_ws2812LED.h代码

#ifndef BSP_WS2812LED_H_

#defineBSP_WS2812LED_H_



#include<stdint.h>



//            编码 0 : 11000000

#defineCODE_0      0xc0

//            编码 1 : 11111000

#defineCODE_1      0xF8

/*ws2812b灯珠数量*/

#defineWS2812B_AMOUNT  16



typedefstruct

{

uint8_tR;

uint8_tG;

uint8_tB;

}tWs2812bCache_TypeDef;



externtWs2812bCache_TypeDef gWs2812bDat[WS2812B_AMOUNT];



voidWS2812b_Set(uint16_tWs2b812b_NUM,uint8_tr,uint8_tg,uint8_tb);

voidWS2812B_Task(void);





#endif/* WS2812_H_ */

hal.entry.c文件

#include"hal_data.h"

#include"ws2812LED/bsp_ws2812LED.h"

FSP_CPP_HEADER

voidR_BSP_WarmStart(bsp_warm_start_event_tevent);

FSP_CPP_FOOTER



fsp_err_t err =FSP_SUCCESS;

volatile bool g_transfer_complete = false;

voidsci_spi_callback(spi_callback_args_t*p_args)

{

if(SPI_EVENT_TRANSFER_COMPLETE==p_args->event)

{

        g_transfer_complete = true;

}

}



externtWs2812bCache_TypeDef gWs2812bDat[WS2812B_AMOUNT];



voidmove_Front()

{

uint8_ti;

uint8_ttemp[3];

temp[0]= gWs2812bDat[0].R;

temp[1]= gWs2812bDat[0].G;

temp[2]= gWs2812bDat[0].B;

for(i=0;i< WS2812B_AMOUNT-1;i++)

{

        gWs2812bDat[i].R= gWs2812bDat[i+1].R;

        gWs2812bDat[i].G= gWs2812bDat[i+1].G;

        gWs2812bDat[i].B= gWs2812bDat[i+1].B;

}

        gWs2812bDat[15].R=temp[0];

        gWs2812bDat[15].G=temp[1];

        gWs2812bDat[15].B=temp[2];

}







/*******************************************************************************************************************//**

 * 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.

 **********************************************************************************************************************/

voidhal_entry(void)

{

/* TODO: add your own code here */

    err =R_SCI_SPI_Open(&g_spi0_ctrl,&g_spi0_cfg);

    assert(FSP_SUCCESS== err);



sci_spi_extended_cfg_tsci_spi_extended_cfg_t1;

WS2812B_Task();

R_BSP_SoftwareDelay(1,BSP_DELAY_UNITS_MILLISECONDS);



while(1)

{

WS2812B_Task();

move_Front();

R_BSP_SoftwareDelay(100,BSP_DELAY_UNITS_MILLISECONDS);

}



#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

 **********************************************************************************************************************/

voidR_BSP_WarmStart(bsp_warm_start_event_tevent)

{

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_BUILD



FSP_CPP_HEADER

BSP_CMSE_NONSECURE_ENTRY void template_nonsecure_callable ();



/* Trustzone Secure Projects require at least one nonsecurecallable function in order to build (Remove this if it is not required to build). */

BSP_CMSE_NONSECURE_ENTRY void template_nonsecure_callable ()

{



}

FSP_CPP_FOOTER



#endif