今天是一个奇怪的日子，我的jlink突然丢固件了，也就是变砖了，我没有自动升级。
其次，由于变砖，导致我用mdk无法烧录程序（一点开设置选项就卡死，任务管理器都无法关闭），所以我用stm32 utilities 烧录，硬是折腾死我了！！！！
居然是上位机软件问题。
解决办法，把jlink的usb拔掉，mdk5就能正常设置了，stlink能烧录，但是单独使用stm32 utilities 烧录任然不行！！！！！！！
既然能搞了，那就搞起来吧，花了一下午，驱动st7920，杠杠滴！！
- int main(void)
- {
- /* STM32F4xx HAL library initialization:
- - Configure the Flash prefetch and Buffer caches
- - Systick timer is configured by default as source of time base, but user
- can eventually implement his proper time base source (a general purpose
- timer for example or other time source), keeping in mind that Time base
- duration should be kept 1ms since PPP_TIMEOUT_VALUEs are defined and
- handled in milliseconds basis.
- - Low Level Initialization
- */
- HAL_Init();
- SystemClock_Config(); /* Configure the system clock to 100 MHz */
- BSP_LED_Init(LED2);
- BSP_PB_Init(BUTTON_USER, BUTTON_MODE_GPIO);
-
- LCD_Init();
- BLK_ON;
- LCD_Clear_GDRAM();
-
-
- HAL_Delay(800);
- LCD_Clear_DDRAM();
-
- while (1)
- {
-
- BSP_LED_Toggle(LED2);
- HAL_Delay(500);
-
- LCD_Clear_GDRAM();
- ShowStringPos(1, 1,"ST7920 LCD");
- ShowStringPos(2, 1,"TEST OK");
-
-
- }
- }
嘿嘿，看图：
很爽吧~~~
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