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This program is guided to help establish a connection between two RFM95 900MHz LoRa radio modules using Maxim Integrated's Feather MCUs (MAX32630FTHR Mbed and the MAX32620FTHR Mbed). Once the radios are configured after powering on and if the radios are wired correctly, the two radios will self identify as either a master or a slave, and will then proceed to PING and PONG back and forth. Information about what is happening between the radios can be seen if the two boards are hooked up to a USB COM port through the included DAPLINK/MAX32625PICO modules.
Dependencies: BufferedSerial SX1276GenericLib USBDeviceHT max32630fthr
Fork of MAX326xxFTHR_LoRa_PingPong by
main.cpp@8:3b0d7b4ff28f, 2017-05-19 (annotated)
- Committer:
- Helmut64
- Date:
- Fri May 19 14:04:56 2017 +0000
- Revision:
- 8:3b0d7b4ff28f
- Parent:
- 0:c43b6919ae15
- Child:
- 13:5a32a1922fbc
Updated description.
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
Helmut64 | 0:c43b6919ae15 | 1 | /* |
Helmut64 | 0:c43b6919ae15 | 2 | * Copyright (c) 2017 Helmut Tschemernjak |
Helmut64 | 0:c43b6919ae15 | 3 | * 30826 Garbsen (Hannover) Germany |
Helmut64 | 0:c43b6919ae15 | 4 | * Licensed under the Apache License, Version 2.0); |
Helmut64 | 0:c43b6919ae15 | 5 | */ |
Helmut64 | 0:c43b6919ae15 | 6 | #include "main.h" |
Helmut64 | 0:c43b6919ae15 | 7 | |
Helmut64 | 8:3b0d7b4ff28f | 8 | /* |
Helmut64 | 8:3b0d7b4ff28f | 9 | * IMPORTANT NOTE |
Helmut64 | 8:3b0d7b4ff28f | 10 | * Use the Nucleo-L073RZ target for the STM B_L072Z_LRWAN1 LoRa board |
Helmut64 | 8:3b0d7b4ff28f | 11 | */ |
Helmut64 | 0:c43b6919ae15 | 12 | DigitalOut myled(LED1); |
Helmut64 | 0:c43b6919ae15 | 13 | BufferedSerial *ser; |
Helmut64 | 0:c43b6919ae15 | 14 | |
Helmut64 | 0:c43b6919ae15 | 15 | int main() { |
Helmut64 | 0:c43b6919ae15 | 16 | SystemClock_Config(); |
Helmut64 | 0:c43b6919ae15 | 17 | ser = new BufferedSerial(USBTX, USBRX); |
Helmut64 | 0:c43b6919ae15 | 18 | ser->baud(115200*2); |
Helmut64 | 0:c43b6919ae15 | 19 | ser->format(8); |
Helmut64 | 0:c43b6919ae15 | 20 | ser->printf("Hello World\n\r"); |
Helmut64 | 0:c43b6919ae15 | 21 | myled = 1; |
Helmut64 | 0:c43b6919ae15 | 22 | |
Helmut64 | 0:c43b6919ae15 | 23 | SX1276PingPong(); |
Helmut64 | 0:c43b6919ae15 | 24 | } |
Helmut64 | 0:c43b6919ae15 | 25 | |
Helmut64 | 0:c43b6919ae15 | 26 | |
Helmut64 | 0:c43b6919ae15 | 27 | |
Helmut64 | 0:c43b6919ae15 | 28 | |
Helmut64 | 0:c43b6919ae15 | 29 | void SystemClock_Config(void) |
Helmut64 | 0:c43b6919ae15 | 30 | { |
Helmut64 | 0:c43b6919ae15 | 31 | #ifdef B_L072Z_LRWAN1_LORA |
Helmut64 | 0:c43b6919ae15 | 32 | /* |
Helmut64 | 0:c43b6919ae15 | 33 | * The L072Z_LRWAN1_LORA clock setup is somewhat differnt from the Nucleo board. |
Helmut64 | 0:c43b6919ae15 | 34 | * It has no LSE. |
Helmut64 | 0:c43b6919ae15 | 35 | */ |
Helmut64 | 0:c43b6919ae15 | 36 | RCC_ClkInitTypeDef RCC_ClkInitStruct = {0}; |
Helmut64 | 0:c43b6919ae15 | 37 | RCC_OscInitTypeDef RCC_OscInitStruct = {0}; |
Helmut64 | 0:c43b6919ae15 | 38 | |
Helmut64 | 0:c43b6919ae15 | 39 | /* Enable HSE Oscillator and Activate PLL with HSE as source */ |
Helmut64 | 0:c43b6919ae15 | 40 | RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI; |
Helmut64 | 0:c43b6919ae15 | 41 | RCC_OscInitStruct.HSEState = RCC_HSE_OFF; |
Helmut64 | 0:c43b6919ae15 | 42 | RCC_OscInitStruct.HSIState = RCC_HSI_ON; |
Helmut64 | 0:c43b6919ae15 | 43 | RCC_OscInitStruct.HSICalibrationValue = RCC_HSICALIBRATION_DEFAULT; |
Helmut64 | 0:c43b6919ae15 | 44 | RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON; |
Helmut64 | 0:c43b6919ae15 | 45 | RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSI; |
Helmut64 | 0:c43b6919ae15 | 46 | RCC_OscInitStruct.PLL.PLLMUL = RCC_PLLMUL_6; |
Helmut64 | 0:c43b6919ae15 | 47 | RCC_OscInitStruct.PLL.PLLDIV = RCC_PLLDIV_3; |
Helmut64 | 0:c43b6919ae15 | 48 | |
Helmut64 | 0:c43b6919ae15 | 49 | if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK) { |
Helmut64 | 0:c43b6919ae15 | 50 | // Error_Handler(); |
Helmut64 | 0:c43b6919ae15 | 51 | } |
Helmut64 | 0:c43b6919ae15 | 52 | |
Helmut64 | 0:c43b6919ae15 | 53 | /* Set Voltage scale1 as MCU will run at 32MHz */ |
Helmut64 | 0:c43b6919ae15 | 54 | __HAL_RCC_PWR_CLK_ENABLE(); |
Helmut64 | 0:c43b6919ae15 | 55 | __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1); |
Helmut64 | 0:c43b6919ae15 | 56 | |
Helmut64 | 0:c43b6919ae15 | 57 | /* Poll VOSF bit of in PWR_CSR. Wait until it is reset to 0 */ |
Helmut64 | 0:c43b6919ae15 | 58 | while (__HAL_PWR_GET_FLAG(PWR_FLAG_VOS) != RESET) {}; |
Helmut64 | 0:c43b6919ae15 | 59 | |
Helmut64 | 0:c43b6919ae15 | 60 | /* Select PLL as system clock source and configure the HCLK, PCLK1 and PCLK2 |
Helmut64 | 0:c43b6919ae15 | 61 | clocks dividers */ |
Helmut64 | 0:c43b6919ae15 | 62 | RCC_ClkInitStruct.ClockType = (RCC_CLOCKTYPE_SYSCLK | RCC_CLOCKTYPE_HCLK | RCC_CLOCKTYPE_PCLK1 | RCC_CLOCKTYPE_PCLK2); |
Helmut64 | 0:c43b6919ae15 | 63 | RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK; |
Helmut64 | 0:c43b6919ae15 | 64 | RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1; |
Helmut64 | 0:c43b6919ae15 | 65 | RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1; |
Helmut64 | 0:c43b6919ae15 | 66 | RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1; |
Helmut64 | 0:c43b6919ae15 | 67 | if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_1) != HAL_OK) { |
Helmut64 | 0:c43b6919ae15 | 68 | // Error_Handler(); |
Helmut64 | 0:c43b6919ae15 | 69 | } |
Helmut64 | 0:c43b6919ae15 | 70 | #endif |
Helmut64 | 0:c43b6919ae15 | 71 | } |
Helmut64 | 0:c43b6919ae15 | 72 | |
Helmut64 | 0:c43b6919ae15 | 73 | void dump(const char *title, const void *data, int len, bool dwords) |
Helmut64 | 0:c43b6919ae15 | 74 | { |
Helmut64 | 0:c43b6919ae15 | 75 | dprintf("dump(\"%s\", 0x%x, %d bytes)", title, data, len); |
Helmut64 | 0:c43b6919ae15 | 76 | |
Helmut64 | 0:c43b6919ae15 | 77 | int i, j, cnt; |
Helmut64 | 0:c43b6919ae15 | 78 | unsigned char *u; |
Helmut64 | 0:c43b6919ae15 | 79 | const int width = 16; |
Helmut64 | 0:c43b6919ae15 | 80 | const int seppos = 7; |
Helmut64 | 0:c43b6919ae15 | 81 | |
Helmut64 | 0:c43b6919ae15 | 82 | cnt = 0; |
Helmut64 | 0:c43b6919ae15 | 83 | u = (unsigned char *)data; |
Helmut64 | 0:c43b6919ae15 | 84 | while (len > 0) { |
Helmut64 | 0:c43b6919ae15 | 85 | ser->printf("%08x: ", (unsigned int)data + cnt); |
Helmut64 | 0:c43b6919ae15 | 86 | if (dwords) { |
Helmut64 | 0:c43b6919ae15 | 87 | unsigned int *ip = ( unsigned int *)u; |
Helmut64 | 0:c43b6919ae15 | 88 | ser->printf(" 0x%08x\r\n", *ip); |
Helmut64 | 0:c43b6919ae15 | 89 | u+= 4; |
Helmut64 | 0:c43b6919ae15 | 90 | len -= 4; |
Helmut64 | 0:c43b6919ae15 | 91 | cnt += 4; |
Helmut64 | 0:c43b6919ae15 | 92 | continue; |
Helmut64 | 0:c43b6919ae15 | 93 | } |
Helmut64 | 0:c43b6919ae15 | 94 | cnt += width; |
Helmut64 | 0:c43b6919ae15 | 95 | j = len < width ? len : width; |
Helmut64 | 0:c43b6919ae15 | 96 | for (i = 0; i < j; i++) { |
Helmut64 | 0:c43b6919ae15 | 97 | ser->printf("%2.2x ", *(u + i)); |
Helmut64 | 0:c43b6919ae15 | 98 | if (i == seppos) |
Helmut64 | 0:c43b6919ae15 | 99 | ser->putc(' '); |
Helmut64 | 0:c43b6919ae15 | 100 | } |
Helmut64 | 0:c43b6919ae15 | 101 | ser->putc(' '); |
Helmut64 | 0:c43b6919ae15 | 102 | if (j < width) { |
Helmut64 | 0:c43b6919ae15 | 103 | i = width - j; |
Helmut64 | 0:c43b6919ae15 | 104 | if (i > seppos + 1) |
Helmut64 | 0:c43b6919ae15 | 105 | ser->putc(' '); |
Helmut64 | 0:c43b6919ae15 | 106 | while (i--) { |
Helmut64 | 0:c43b6919ae15 | 107 | printf("%s", " "); |
Helmut64 | 0:c43b6919ae15 | 108 | } |
Helmut64 | 0:c43b6919ae15 | 109 | } |
Helmut64 | 0:c43b6919ae15 | 110 | for (i = 0; i < j; i++) { |
Helmut64 | 0:c43b6919ae15 | 111 | int c = *(u + i); |
Helmut64 | 0:c43b6919ae15 | 112 | if (c >= ' ' && c <= '~') |
Helmut64 | 0:c43b6919ae15 | 113 | ser->putc(c); |
Helmut64 | 0:c43b6919ae15 | 114 | else |
Helmut64 | 0:c43b6919ae15 | 115 | ser->putc('.'); |
Helmut64 | 0:c43b6919ae15 | 116 | if (i == seppos) |
Helmut64 | 0:c43b6919ae15 | 117 | ser->putc(' '); |
Helmut64 | 0:c43b6919ae15 | 118 | } |
Helmut64 | 0:c43b6919ae15 | 119 | len -= width; |
Helmut64 | 0:c43b6919ae15 | 120 | u += width; |
Helmut64 | 0:c43b6919ae15 | 121 | ser->printf("\r\n"); |
Helmut64 | 0:c43b6919ae15 | 122 | } |
Helmut64 | 0:c43b6919ae15 | 123 | ser->printf("--\r\n"); |
Helmut64 | 0:c43b6919ae15 | 124 | } |