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【杰发科技AC7802x测评】linux下开发-实现串口空闲不定长数据收发

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lulugl|  楼主 | 2023-6-3 20:49 | 只看该作者 回帖奖励 |倒序浏览 |阅读模式
AC, linux, 串口, 数据收发
【杰发科技AC7802x测评】linux下开发按键中断试验 - - 21ic电子技术开**坛
在这篇的基础之上，我们今天学习使用AC7802的串口收发。
1、把原来的工程复制一份到新的文件夹，并重命名为AC7802_UART工程。
2、新建Uart.h、Uart.c，内容如下：
复制
#ifndef __UART_H__

#define __UART_H__

#include "ac780x_uart.h"



void UART_Cfg_Init(void);



#endif
Uart.c
复制
#include <stdbool.h>

#include "ac780x_gpio.h"

#include "ac780x_uart_reg.h"

#include "Uart.h"



#define RX_BUF_LEN   100U



uint8_t g_rxLen  = 0;                 /*!< 串口接收长度变量 */        

uint8_t g_txLen  = 0;                 /*!< 串口发送长度变量 */

uint8_t g_txCnt  = 0;

uint8_t g_rxBuf[RX_BUF_LEN] = {0};    /*!< 串口接收数组 */     



/*!

 * [url=home.php?mod=space&uid=247401]@brief[/url]   串口回调函数

 *

 * @param   void *device：UART_Type pointer

            uint32_t wpara：UART lsr0 register

            uint32_t lpara：UART lsr1 register

 * [url=home.php?mod=space&uid=266161]@return[/url]  none

 */

void UART_Callback(void *device, uint32_t wpara, uint32_t lpara)

{

    UART_Type *Uart_Device = (UART_Type *)device;



    /*! 串口接收中断 */

    if(wpara & UART_LSR0_DR_Msk)

    {

        g_rxBuf[g_rxLen++] = UART_ReceiveData(Uart_Device);



        if(g_rxLen > RX_BUF_LEN)

        {

            g_rxLen = 0;

        }

    }



    /*!< 发送fifo空中断  */

    if(Uart_Device->IER & UART_IER_ETXE_Msk)

    {

        UART_SendData(Uart_Device,g_rxBuf[g_txCnt++]);



        if(g_txCnt >= g_txLen)

        {

            g_txCnt = 0;

            UART_SetTXEInterrupt(Uart_Device, DISABLE);

        }

    }



    /*!< 串口空闲中断 */

    if(lpara & UART_LSR1_IDLE_Msk)

    {

        g_txLen = g_rxLen;    

        g_rxLen = 0;



        UART_SetTXEInterrupt(Uart_Device, ENABLE);

    }

}



/*!

 * @brief   uart configuration init

 *

 * @param   none

 * @return  none

 */

void UART_Cfg_Init(void)

{

    UART_ConfigType uart_config;



    GPIO_SetFunc(GPIOA, GPIO_PIN4, GPIO_FUN3);    /*! uart tx */

    GPIO_SetFunc(GPIOA, GPIO_PIN5, GPIO_FUN3);    /*! uart rx */



    uart_config.baudrate   = 115200;              /*! 波特率115200 */

    uart_config.dataBits   = UART_WORD_LEN_8BIT;  /*! 数据8bit */

    uart_config.stopBits   = UART_STOP_1BIT;      /*! 停止位1bit */

    uart_config.fifoByteEn = DISABLE;   

    uart_config.sampleCnt  = UART_SMP_CNT0;       /*! 16倍采样 */

    uart_config.callBack   = UART_Callback;       /*! 回调函数设置 */



    UART_Init(UART1,&uart_config);                /*! 串口初始化 */



    UART_SetRXNEInterrupt(UART1, ENABLE);         /*! 串口接收中断使能 */



    UART_SetIdleFuncEn(UART1, ENABLE);

    UART_SetIdleInterrupt(UART1, ENABLE);         /*! 使能串口空闲中断 */



    NVIC_SetPriority(UART1_IRQn, 3);              /*! 串口中断优先级 */

    NVIC_ClearPendingIRQ(UART1_IRQn);

    NVIC_EnableIRQ(UART1_IRQn);

}
3、修改makefile内容中的TARGET 为：AC7802_UART。去掉原来gpio.c，新建Uart.c，增加ac78x_uart.c：
复制
# C sources

C_SOURCES =  \

Src/main.c \

Src/AC7802x_irq_cb.c \

Src/AC7802x_msp.c \

Src/system_AC7802x.c \

Drivers/ATC_Driver/Src/ac780x_gpio.c \

Drivers/ATC_Driver/Src/ac780x_ckgen.c \

Drivers/ATC_Driver/Src/ac780x_spm.c  \

Drivers/ATC_Driver/Src/ac780x_uart.c \

User/Src/Uart.c
4、make结果如下：
复制
lugl@lugl-virtual-machine:~/ac7802/AC7802_UART$ make

mkdir build

arm-none-eabi-gcc -c -mcpu=cortex-m0plus -mthumb    -IInc -IDrivers/ATC_Driver/Inc -IDrivers/Device/Include -IDrivers/Device -IDrivers/Device/Include/CMSIS -IUser/Inc -O0 -Wall -fdata-sections -ffunction-sections -g -gdwarf-2 -MMD -MP -MF"build/main.d" -Wa,-a,-ad,-alms=build/main.lst Src/main.c -o build/main.o

arm-none-eabi-gcc -c -mcpu=cortex-m0plus -mthumb    -IInc -IDrivers/ATC_Driver/Inc -IDrivers/Device/Include -IDrivers/Device -IDrivers/Device/Include/CMSIS -IUser/Inc -O0 -Wall -fdata-sections -ffunction-sections -g -gdwarf-2 -MMD -MP -MF"build/AC7802x_irq_cb.d" -Wa,-a,-ad,-alms=build/AC7802x_irq_cb.lst Src/AC7802x_irq_cb.c -o build/AC7802x_irq_cb.o

arm-none-eabi-gcc -c -mcpu=cortex-m0plus -mthumb    -IInc -IDrivers/ATC_Driver/Inc -IDrivers/Device/Include -IDrivers/Device -IDrivers/Device/Include/CMSIS -IUser/Inc -O0 -Wall -fdata-sections -ffunction-sections -g -gdwarf-2 -MMD -MP -MF"build/AC7802x_msp.d" -Wa,-a,-ad,-alms=build/AC7802x_msp.lst Src/AC7802x_msp.c -o build/AC7802x_msp.o

arm-none-eabi-gcc -c -mcpu=cortex-m0plus -mthumb    -IInc -IDrivers/ATC_Driver/Inc -IDrivers/Device/Include -IDrivers/Device -IDrivers/Device/Include/CMSIS -IUser/Inc -O0 -Wall -fdata-sections -ffunction-sections -g -gdwarf-2 -MMD -MP -MF"build/system_AC7802x.d" -Wa,-a,-ad,-alms=build/system_AC7802x.lst Src/system_AC7802x.c -o build/system_AC7802x.o

arm-none-eabi-gcc -c -mcpu=cortex-m0plus -mthumb    -IInc -IDrivers/ATC_Driver/Inc -IDrivers/Device/Include -IDrivers/Device -IDrivers/Device/Include/CMSIS -IUser/Inc -O0 -Wall -fdata-sections -ffunction-sections -g -gdwarf-2 -MMD -MP -MF"build/ac780x_gpio.d" -Wa,-a,-ad,-alms=build/ac780x_gpio.lst Drivers/ATC_Driver/Src/ac780x_gpio.c -o build/ac780x_gpio.o

arm-none-eabi-gcc -c -mcpu=cortex-m0plus -mthumb    -IInc -IDrivers/ATC_Driver/Inc -IDrivers/Device/Include -IDrivers/Device -IDrivers/Device/Include/CMSIS -IUser/Inc -O0 -Wall -fdata-sections -ffunction-sections -g -gdwarf-2 -MMD -MP -MF"build/ac780x_ckgen.d" -Wa,-a,-ad,-alms=build/ac780x_ckgen.lst Drivers/ATC_Driver/Src/ac780x_ckgen.c -o build/ac780x_ckgen.o

arm-none-eabi-gcc -c -mcpu=cortex-m0plus -mthumb    -IInc -IDrivers/ATC_Driver/Inc -IDrivers/Device/Include -IDrivers/Device -IDrivers/Device/Include/CMSIS -IUser/Inc -O0 -Wall -fdata-sections -ffunction-sections -g -gdwarf-2 -MMD -MP -MF"build/ac780x_spm.d" -Wa,-a,-ad,-alms=build/ac780x_spm.lst Drivers/ATC_Driver/Src/ac780x_spm.c -o build/ac780x_spm.o

arm-none-eabi-gcc -c -mcpu=cortex-m0plus -mthumb    -IInc -IDrivers/ATC_Driver/Inc -IDrivers/Device/Include -IDrivers/Device -IDrivers/Device/Include/CMSIS -IUser/Inc -O0 -Wall -fdata-sections -ffunction-sections -g -gdwarf-2 -MMD -MP -MF"build/ac780x_uart.d" -Wa,-a,-ad,-alms=build/ac780x_uart.lst Drivers/ATC_Driver/Src/ac780x_uart.c -o build/ac780x_uart.o

arm-none-eabi-gcc -c -mcpu=cortex-m0plus -mthumb    -IInc -IDrivers/ATC_Driver/Inc -IDrivers/Device/Include -IDrivers/Device -IDrivers/Device/Include/CMSIS -IUser/Inc -O0 -Wall -fdata-sections -ffunction-sections -g -gdwarf-2 -MMD -MP -MF"build/Uart.d" -Wa,-a,-ad,-alms=build/Uart.lst User/Src/Uart.c -o build/Uart.o

arm-none-eabi-gcc -x assembler-with-cpp -c -mcpu=cortex-m0plus -mthumb    -IInc -IDrivers/ATC_Driver/Inc -IDrivers/Device/Include -IDrivers/Device -IDrivers/Device/Include/CMSIS -IUser/Inc -O0 -Wall -fdata-sections -ffunction-sections -g -gdwarf-2 -MMD -MP -MF"build/startup_AC7802x.d" startup_AC7802x.s -o build/startup_AC7802x.o

arm-none-eabi-gcc build/main.o build/AC7802x_irq_cb.o build/AC7802x_msp.o build/system_AC7802x.o build/ac780x_gpio.o build/ac780x_ckgen.o build/ac780x_spm.o build/ac780x_uart.o build/Uart.o build/startup_AC7802x.o -mcpu=cortex-m0plus -mthumb   -specs=nano.specs -TAC78022MBQA_FLASH.ld  -lc -lm -lnosys  -Wl,-Map=build/AC7802_UART.map,--cref -Wl,--gc-sections -o build/AC7802_UART.elf

arm-none-eabi-size build/AC7802_UART.elf

   text    data     bss     dec     hex filename

  12016      12    2220   14248    37a8 build/AC7802_UART.elf

arm-none-eabi-objcopy -O ihex build/AC7802_UART.elf build/AC7802_UART.hex

arm-none-eabi-objcopy -O binary -S build/AC7802_UART.elf build/AC7802_UART.bin
5、输入下载命令：
复制
lugl@lugl-virtual-machine:~/ac7802/AC7802_UART$ pyocd flash ./build/AC7802_UART.elf --target ac78022mbqa

0000426 I Loading /home/lugl/ac7802/AC7802_UART/build/AC7802_UART.elf [load_cmd]

[==================================================] 100%

0001139 I Erased 0 bytes (0 sectors), programmed 0 bytes (0 pages), skipped 12288 bytes (24 pages) at 16.84 kB/s [loader]
6、同时为了方便下载，我们在makefile后面增加 makefile flash命令实现下载:
复制
flash:

        pyocd flash ./build/AC7802_UART.elf --target ac78022mbqa
我们在执行make falsh后就可以实现下载功能了：
复制
lugl@lugl-virtual-machine:~/ac7802/AC7802_UART$ make flash

pyocd flash ./build/AC7802_UART.elf --target ac78022mbqa

0000445 I Loading /home/lugl/ac7802/AC7802_UART/build/AC7802_UART.elf [load_cmd]

[==================================================] 100%

0001146 I Erased 0 bytes (0 sectors), programmed 0 bytes (0 pages), skipped 12288 bytes (24 pages) at 17.16 kB/s [loader]

l
7、实现效果：下载后，我们用typec线接到开发板的typec接口，打开串口助手，我们就可以实现不定义发送，同时AC7802把接收到的数据回显回来：
复制
[20:21:10.657]发→◇AT1313123112123123



□

[20:21:10.661]收←◆AT1313123112123123





[20:47:13.157]发→◇AT13131231





□

[20:47:13.160]收←◆AT13131231







[20:47:22.561]发→◇你好





□

[20:47:22.563]收←◆你好







[20:47:30.890]发→◇你好 AC7802X





□

[20:47:30.893]收←◆你好 AC7802X
【总结】杰发的库函数做得非常好，给的示例也非常好，使得学习起来非常快捷。同时在linux环境下，用vscode也开发，也是非常之方便。体验了编程之快乐！
此文章已获得独家原创/原创奖标签，著作权归21ic所有，未经允许禁止转载。

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