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【GD32F310开发板试用】ILI9341 TFT屏驱动与多任务运行


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1.多任务运行说明

此次测试是在之前MultiTimer的基础上增加ILI9341 TFT屏驱动,并同时运行led灯闪+串口打印+TFT屏显示三个任务,看起来像是同时运行的,实际上是利用了MultiTimer的功能进行时间片轮询操作。MultiTimer的移植可以参考我前面发过的一篇文章(链接)

2.TFT屏驱动移植

TFT屏驱动采用GDF310的硬件SPI,IO口接法如下;由于都是数据往屏幕写,没有涉及返回的数据,实际上PA6<–SPI0_MISO可以不接;另外就是注意PA5只连到了JP2的中间脚,如果接线到JP7或者JP8上的PA5,需要在JP2上街跳线帽;我的线是接到JP8的PA5脚的,因此用跳线帽将JP2的PA5与Dx相连;
PA5 SPI0_SCK
PA6 SPI0_MISO
PA7 SPI0_MOSI
PB5 LCD_CS
PB4 LCD_RST
PB3 LCD_D/C
驱动代码我参考了GD32F150R的SPI_TFT_LCD_Driver,运气比较好,拿过来小改了一下就可以跑了;以下是屏幕测试代码,完整代码已上传,可以通过此链接下载

void tft_test_func(void){    switch(tft_test.state)    { case 0:     num_test2();      break; case 1:     font_test2_1();     break; case 2:     font_test2_2();     break; case 3:     color_test2(BLUE,YELLOW,"Yellow");     break;      case 4:     color_test2(BLACK,WHITE,"White");   break; case 5:     color_test2(WHITE,BLACK,"Black");   break; case 6:     color_test2(WHITE,RED,"Red");   break; case 7:     color_test2(BLUE,GREEN,"Green");   break; case 8:     color_test2(YELLOW,BLUE,"Blue");   break;  case 9:     draw_test2();     break; default:     break;    }tft_test.state++;    if(tft_test.state >= 10)    { tft_test.state = 0;    } }

3.主函数部分

总共创建了4个任务,全部由MultiTimerYield()进行调度运行,主程序部分代码如下,可以看到液晶屏显示的任务是放到exampleTimer1Callback()中运行了,定时周期为2s。

#include #include "gd32f3x0.h"#include "gd32f310k_start.h"#include "systick.h"#include "MultiTimer.h"#include "app.h"#include "hal_uart.h"#include "tft_test.h"#include "lcd_driver.h"MultiTimer timer1;MultiTimer timer2;MultiTimer timer3;MultiTimer timer4;void exampleTimer1Callback(MultiTimer* timer, void *userData){    printf("exampleTimer1Callback-> %s.\r\n", (char*)userData);    MultiTimerStart(timer, 2000, exampleTimer1Callback, userData);// gpio_bit_toggle(GPIOA, GPIO_PIN_8);    tft_test_func();}void exampleTimer2Callback(MultiTimer* timer, void *userData){    printf("exampleTimer2Callback-> %s.\r\n", (char*)userData);}void exampleTimer3Callback(MultiTimer* timer, void *userData){    printf("exampleTimer3Callback-> %s.\r\n", (char*)userData);    MultiTimerStart(timer, 4567, exampleTimer3Callback, userData);}void exampleTimer4Callback(MultiTimer* timer, void *userData){    MultiTimerStart(timer, 500, exampleTimer4Callback, userData);    gpio_bit_toggle(GPIOA, GPIO_PIN_8);}/*!    \brief      main function    \param[in]  none    \param[out] none    \retval     none*/int main(void){      systick_config();    /* enable the LED GPIO clock */    rcu_periph_clock_enable(RCU_GPIOA);    rcu_periph_clock_enable(RCU_GPIOB);    /* configure led GPIO port */     gpio_mode_set(GPIOA, GPIO_MODE_OUTPUT, GPIO_PUPD_NONE, GPIO_PIN_8);    gpio_output_options_set(GPIOA, GPIO_OTYPE_PP, GPIO_OSPEED_50MHZ, GPIO_PIN_8); gpio_bit_reset(GPIOA, GPIO_PIN_8); /* initilize the com */    usart0_gpio_config();    usart0_config();/* initialize lcd */    lcd_init();    MultiTimerInstall(PlatformTicksGetFunc);    MultiTimerStart(&timer1, 2000, exampleTimer1Callback, "2000ms CYCLE timer");    MultiTimerStart(&timer2, 5000, exampleTimer2Callback, "5000ms ONCE timer");    MultiTimerStart(&timer3, 3456, exampleTimer3Callback, "3456ms delay start, 4567ms CYCLE timer");    MultiTimerStart(&timer4, 1000, exampleTimer4Callback, "500ms CYCLE timer"); while(1){MultiTimerYield();    }}

4.运行效果

GD32F310开发板试用1