Rename MCU

stm32f103t8u6/src/main.c

@@ -0,0 +1,56 @@
+#include "main.h"
+
+static void Clock_Init(void)
+{
+    // Activate HSE and wait for it to be ready
+    RCC->CR = RCC_CR_HSEON;
+    while(!(RCC->CR & RCC_CR_HSERDY));
+
+    RCC->CFGR = RCC_CFGR_SW_0;
+    while((RCC->CFGR & RCC_CFGR_SWS) != RCC_CFGR_SWS_0);
+
+    FLASH->ACR |= FLASH_ACR_LATENCY_1;
+
+    // Set PLL to x9 (-> 72MHz system clock)
+    RCC->CFGR |= RCC_CFGR_PLLMULL9 | RCC_CFGR_PLLSRC | RCC_CFGR_PPRE1_2;
+
+    // Activate PLL and wait
+    RCC->CR |= RCC_CR_PLLON;
+    while(!(RCC->CR & RCC_CR_PLLRDY));
+
+    // Select PLL as clock source
+    RCC->CFGR = (RCC->CFGR & ~RCC_CFGR_SW) | RCC_CFGR_SW_1;
+
+    // Resulting clocks:
+    // SYSCLK, AHB, APB2 72 Mhz
+    // APB1, ADC 36 MHz
+#if (CLOCK_SYSCLK != 72000000) || (CLOCK_AHB != 72000000) \
+    || (CLOCK_APB1 != 36000000) || (CLOCK_APB2 != 72000000)
+#error Clock initialisation does not match definitions in clock.h.
+#endif
+
+    // Disable all interrupts
+    RCC->CIR = 0x00000000;
+}
+
+int main(void)
+{
+    Clock_Init();
+    LED_Init();
+    USB_Init();
+    Output_Init();
+
+    LED_ON();
+
+    // uint8_t buffer[32];
+    for(;;)
+    {
+        // int length = USBCDC_ReceiveData(buffer, sizeof(buffer));
+        // if(length)
+        // {
+        //     USBCDC_SendData(buffer, length);
+        // }
+        // __WFI();
+        HPGL_Poll();
+    }
+}