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     ser->printf("Hello World\n\r");
00017     myled = 1;
00018     
00019     SX1276PingPong();
00020 }
00021 
00022 
00023 
00024 
00025 void SystemClock_Config(void)
00026 {
00027 #ifdef B_L072Z_LRWAN1_LORA
00028     /* 
00029      * The L072Z_LRWAN1_LORA clock setup is somewhat differnt from the Nucleo board.
00030      * It has no LSE.
00031      */
00032     RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
00033     RCC_OscInitTypeDef RCC_OscInitStruct = {0};
00034 
00035     /* Enable HSE Oscillator and Activate PLL with HSE as source */
00036     RCC_OscInitStruct.OscillatorType      = RCC_OSCILLATORTYPE_HSI;
00037     RCC_OscInitStruct.HSEState            = RCC_HSE_OFF;
00038     RCC_OscInitStruct.HSIState            = RCC_HSI_ON;
00039     RCC_OscInitStruct.HSICalibrationValue = RCC_HSICALIBRATION_DEFAULT;
00040     RCC_OscInitStruct.PLL.PLLState        = RCC_PLL_ON;
00041     RCC_OscInitStruct.PLL.PLLSource       = RCC_PLLSOURCE_HSI;
00042     RCC_OscInitStruct.PLL.PLLMUL          = RCC_PLLMUL_6;
00043     RCC_OscInitStruct.PLL.PLLDIV          = RCC_PLLDIV_3;
00044 
00045     if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK) {
00046         // Error_Handler();
00047     }
00048 
00049     /* Set Voltage scale1 as MCU will run at 32MHz */
00050     __HAL_RCC_PWR_CLK_ENABLE();
00051     __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);
00052 
00053     /* Poll VOSF bit of in PWR_CSR. Wait until it is reset to 0 */
00054     while (__HAL_PWR_GET_FLAG(PWR_FLAG_VOS) != RESET) {};
00055 
00056     /* Select PLL as system clock source and configure the HCLK, PCLK1 and PCLK2
00057     clocks dividers */
00058     RCC_ClkInitStruct.ClockType = (RCC_CLOCKTYPE_SYSCLK | RCC_CLOCKTYPE_HCLK | RCC_CLOCKTYPE_PCLK1 | RCC_CLOCKTYPE_PCLK2);
00059     RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
00060     RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
00061     RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;
00062     RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
00063     if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_1) != HAL_OK) {
00064         // Error_Handler();
00065     }
00066 #endif
00067 }
00068 
00069 void dump(const char *title, const void *data, int len, bool dwords)
00070 {
00071     dprintf("dump(\"%s\", 0x%x, %d bytes)", title, data, len);
00072 
00073     int i, j, cnt;
00074     unsigned char *u;
00075     const int width = 16;
00076     const int seppos = 7;
00077 
00078     cnt = 0;
00079     u = (unsigned char *)data;
00080     while (len > 0) {
00081         ser->printf("%08x: ", (unsigned int)data + cnt);
00082         if (dwords) {
00083             unsigned int *ip = ( unsigned int *)u;
00084             ser->printf(" 0x%08x\r\n", *ip);
00085             u+= 4;
00086             len -= 4;
00087             cnt += 4;
00088             continue;
00089         }
00090         cnt += width;
00091         j = len < width ? len : width;
00092         for (i = 0; i < j; i++) {
00093             ser->printf("%2.2x ", *(u + i));
00094             if (i == seppos)
00095                 ser->putc(' ');
00096         }
00097         ser->putc(' ');
00098         if (j < width) {
00099             i = width - j;
00100             if (i > seppos + 1)
00101                 ser->putc(' ');
00102             while (i--) {
00103                 printf("%s", "   ");
00104             }
00105         }
00106         for (i = 0; i < j; i++) {
00107             int c = *(u + i);
00108             if (c >= ' ' && c <= '~')
00109                 ser->putc(c);
00110             else
00111                 ser->putc('.');
00112             if (i == seppos)
00113                 ser->putc(' ');
00114         }
00115         len -= width;
00116         u += width;
00117         ser->printf("\r\n");
00118     }
00119     ser->printf("--\r\n");
00120 }