main.cpp

00001 /*
00002  * Copyright (c) 2017 Helmut Tschemernjak
00003  * 30826 Garbsen (Hannover) Germany
00004  * Licensed under the Apache License, Version 2.0);
00005  */
00006  #include "main.h"
00007 
00008 DigitalOut myled(LED1);
00009 BufferedSerial *ser;
00010 
00011 int main() {
00012     SystemClock_Config();
00013     ser = new BufferedSerial(USBTX, USBRX);
00014     ser->baud(115200*2);
00015     ser->format(8);
00016     myled = 1;
00017     
00018     Receiver();
00019 }
00020 
00021 
00022 
00023 
00024 void SystemClock_Config(void)
00025 {
00026 #ifdef B_L072Z_LRWAN1_LORA
00027     /* 
00028      * The L072Z_LRWAN1_LORA clock setup is somewhat differnt from the Nucleo board.
00029      * It has no LSE.
00030      */
00031     RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
00032     RCC_OscInitTypeDef RCC_OscInitStruct = {0};
00033 
00034     /* Enable HSE Oscillator and Activate PLL with HSE as source */
00035     RCC_OscInitStruct.OscillatorType      = RCC_OSCILLATORTYPE_HSI;
00036     RCC_OscInitStruct.HSEState            = RCC_HSE_OFF;
00037     RCC_OscInitStruct.HSIState            = RCC_HSI_ON;
00038     RCC_OscInitStruct.HSICalibrationValue = RCC_HSICALIBRATION_DEFAULT;
00039     RCC_OscInitStruct.PLL.PLLState        = RCC_PLL_ON;
00040     RCC_OscInitStruct.PLL.PLLSource       = RCC_PLLSOURCE_HSI;
00041     RCC_OscInitStruct.PLL.PLLMUL          = RCC_PLLMUL_6;
00042     RCC_OscInitStruct.PLL.PLLDIV          = RCC_PLLDIV_3;
00043 
00044     if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK) {
00045         // Error_Handler();
00046     }
00047 
00048     /* Set Voltage scale1 as MCU will run at 32MHz */
00049     __HAL_RCC_PWR_CLK_ENABLE();
00050     __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);
00051 
00052     /* Poll VOSF bit of in PWR_CSR. Wait until it is reset to 0 */
00053     while (__HAL_PWR_GET_FLAG(PWR_FLAG_VOS) != RESET) {};
00054 
00055     /* Select PLL as system clock source and configure the HCLK, PCLK1 and PCLK2
00056     clocks dividers */
00057     RCC_ClkInitStruct.ClockType = (RCC_CLOCKTYPE_SYSCLK | RCC_CLOCKTYPE_HCLK | RCC_CLOCKTYPE_PCLK1 | RCC_CLOCKTYPE_PCLK2);
00058     RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
00059     RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
00060     RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;
00061     RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
00062     if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_1) != HAL_OK) {
00063         // Error_Handler();
00064     }
00065 #endif
00066 }
00067 
00068 void dump(const char *title, const void *data, int len, bool dwords)
00069 {
00070     dprintf("dump(\"%s\", 0x%x, %d bytes)", title, data, len);
00071 
00072     int i, j, cnt;
00073     unsigned char *u;
00074     const int width = 16;
00075     const int seppos = 7;
00076 
00077     cnt = 0;
00078     u = (unsigned char *)data;
00079     while (len > 0) {
00080         ser->printf("%08x: ", (unsigned int)data + cnt);
00081         if (dwords) {
00082             unsigned int *ip = ( unsigned int *)u;
00083             ser->printf(" 0x%08x\r\n", *ip);
00084             u+= 4;
00085             len -= 4;
00086             cnt += 4;
00087             continue;
00088         }
00089         cnt += width;
00090         j = len < width ? len : width;
00091         for (i = 0; i < j; i++) {
00092             ser->printf("%2.2x ", *(u + i));
00093             if (i == seppos)
00094                 ser->putc(' ');
00095         }
00096         ser->putc(' ');
00097         if (j < width) {
00098             i = width - j;
00099             if (i > seppos + 1)
00100                 ser->putc(' ');
00101             while (i--) {
00102                 printf("%s", "   ");
00103             }
00104         }
00105         for (i = 0; i < j; i++) {
00106             int c = *(u + i);
00107             if (c >= ' ' && c <= '~')
00108                 ser->putc(c);
00109             else
00110                 ser->putc('.');
00111             if (i == seppos)
00112                 ser->putc(' ');
00113         }
00114         len -= width;
00115         u += width;
00116         ser->printf("\r\n");
00117     }
00118     ser->printf("--\r\n");
00119 }