Helmut Tschemernjak / Mbed 2 deprecated STM32L0_LoRa

Lora support for the STM B_L072Z_LRWAN1 board out of the box. Also supports HopeRF RFM95, Murata CMWX1ZZABZ and Semtech SX1276MB1MAS/SX1276MB1LAS modules.

Dependencies:   BufferedSerial SX1276GenericLib mbed USBDeviceHT

utils.cpp@17:98f2528e8399, 2018-02-23 (annotated)

Committer:
Helmut64
Date:
Fri Feb 23 12:57:25 2018 +0000
Revision:
17:98f2528e8399
Child:
20:a1029437adca
Added Heltec L4 board Pins into PinMap.h; Added USBDevice library to support USBSerial console IO; Moved helper code into utils.cpp; Moved dprintf support with var args and serial or USBSerial output.; Added compile time version support to set RTC to compi...

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Helmut64 17:98f2528e8399 1 /*
Helmut64 17:98f2528e8399 2 * Copyright (c) 2018 Helmut Tschemernjak
Helmut64 17:98f2528e8399 3 * 30826 Garbsen (Hannover) Germany
Helmut64 17:98f2528e8399 4 */
Helmut64 17:98f2528e8399 5 #include "main.h"
Helmut64 17:98f2528e8399 6
Helmut64 17:98f2528e8399 7 time_t cvt_date(char const *date, char const *time);
Helmut64 17:98f2528e8399 8
Helmut64 17:98f2528e8399 9 BufferedSerial *ser;
Helmut64 17:98f2528e8399 10 #ifdef FEATURE_USBSERIAL
Helmut64 17:98f2528e8399 11 USBSerialBuffered *usb;
Helmut64 17:98f2528e8399 12 #endif
Helmut64 17:98f2528e8399 13 bool _useDprintf;
Helmut64 17:98f2528e8399 14
Helmut64 17:98f2528e8399 15 void InitSerial(int timeout, DigitalOut *led)
Helmut64 17:98f2528e8399 16 {
Helmut64 17:98f2528e8399 17 _useDprintf = true;
Helmut64 17:98f2528e8399 18 bool uartActive;
Helmut64 17:98f2528e8399 19 {
Helmut64 17:98f2528e8399 20 {
Helmut64 17:98f2528e8399 21 // need to turn rx low to avoid floating signal
Helmut64 17:98f2528e8399 22 DigitalOut rx(USBRX);
Helmut64 17:98f2528e8399 23 rx = 0;
Helmut64 17:98f2528e8399 24 }
Helmut64 17:98f2528e8399 25 DigitalIn uartRX(USBRX);
Helmut64 17:98f2528e8399 26 uartActive = uartRX.read();
Helmut64 17:98f2528e8399 27 }
Helmut64 17:98f2528e8399 28 #ifdef FEATURE_USBSERIAL
Helmut64 17:98f2528e8399 29 if (!uartActive) {
Helmut64 17:98f2528e8399 30 usb = new USBSerialBuffered();
Helmut64 17:98f2528e8399 31 Timer t;
Helmut64 17:98f2528e8399 32 t.start();
Helmut64 17:98f2528e8399 33 while(!usb->connected()) {
Helmut64 17:98f2528e8399 34 if (led)
Helmut64 17:98f2528e8399 35 *led = !*led;
Helmut64 17:98f2528e8399 36 wait_ms(100);
Helmut64 17:98f2528e8399 37 if (timeout) {
Helmut64 17:98f2528e8399 38 if (t.read_ms() >= timeout)
Helmut64 17:98f2528e8399 39 return;
Helmut64 17:98f2528e8399 40 }
Helmut64 17:98f2528e8399 41 }
Helmut64 17:98f2528e8399 42 return;
Helmut64 17:98f2528e8399 43 } else {
Helmut64 17:98f2528e8399 44 #else
Helmut64 17:98f2528e8399 45 {
Helmut64 17:98f2528e8399 46 #endif
Helmut64 17:98f2528e8399 47 ser = new BufferedSerial(USBTX, USBRX);
Helmut64 17:98f2528e8399 48 ser->baud(230400);
Helmut64 17:98f2528e8399 49 ser->format(8);
Helmut64 17:98f2528e8399 50 }
Helmut64 17:98f2528e8399 51 time_t t = cvt_date(__DATE__, __TIME__);
Helmut64 17:98f2528e8399 52 if (t > time(NULL)) {
Helmut64 17:98f2528e8399 53 set_time(t);
Helmut64 17:98f2528e8399 54 }
Helmut64 17:98f2528e8399 55
Helmut64 17:98f2528e8399 56 }
Helmut64 17:98f2528e8399 57
Helmut64 17:98f2528e8399 58 void printTimeStamp()
Helmut64 17:98f2528e8399 59 {
Helmut64 17:98f2528e8399 60 static LowPowerTimer *timer;
Helmut64 17:98f2528e8399 61 if (!timer) {
Helmut64 17:98f2528e8399 62 timer = new LowPowerTimer();
Helmut64 17:98f2528e8399 63 timer->start();
Helmut64 17:98f2528e8399 64 }
Helmut64 17:98f2528e8399 65 time_t seconds = time(NULL);
Helmut64 17:98f2528e8399 66 struct tm *tm = localtime(&seconds);
Helmut64 17:98f2528e8399 67 int usecs = timer->read_us();
Helmut64 17:98f2528e8399 68 if (usecs < 0) {
Helmut64 17:98f2528e8399 69 usecs = 0;
Helmut64 17:98f2528e8399 70 timer->stop();
Helmut64 17:98f2528e8399 71 timer->reset();
Helmut64 17:98f2528e8399 72 timer->start();
Helmut64 17:98f2528e8399 73 }
Helmut64 17:98f2528e8399 74 int msecs = usecs % 1000000;
Helmut64 17:98f2528e8399 75
Helmut64 17:98f2528e8399 76 rprintf("%02d:%02d:%02d.%06d ", tm->tm_hour, tm->tm_min, tm->tm_sec, msecs);
Helmut64 17:98f2528e8399 77 }
Helmut64 17:98f2528e8399 78
Helmut64 17:98f2528e8399 79 void dprintf(const char *format, ...)
Helmut64 17:98f2528e8399 80 {
Helmut64 17:98f2528e8399 81 std::va_list arg;
Helmut64 17:98f2528e8399 82
Helmut64 17:98f2528e8399 83 va_start(arg, format);
Helmut64 17:98f2528e8399 84 VAprintf(true, true, _useDprintf, format, arg);
Helmut64 17:98f2528e8399 85 va_end(arg);
Helmut64 17:98f2528e8399 86 }
Helmut64 17:98f2528e8399 87
Helmut64 17:98f2528e8399 88 void rprintf(const char *format, ...)
Helmut64 17:98f2528e8399 89 {
Helmut64 17:98f2528e8399 90 std::va_list arg;
Helmut64 17:98f2528e8399 91
Helmut64 17:98f2528e8399 92 va_start(arg, format);
Helmut64 17:98f2528e8399 93 VAprintf(false, false, _useDprintf, format, arg);
Helmut64 17:98f2528e8399 94 va_end(arg);
Helmut64 17:98f2528e8399 95 }
Helmut64 17:98f2528e8399 96
Helmut64 17:98f2528e8399 97 void VAprintf(bool timstamp, bool newline, bool printEnabled, const char *format, va_list arg)
Helmut64 17:98f2528e8399 98 {
Helmut64 17:98f2528e8399 99 if (!printEnabled)
Helmut64 17:98f2528e8399 100 return;
Helmut64 17:98f2528e8399 101
Helmut64 17:98f2528e8399 102 if (timstamp)
Helmut64 17:98f2528e8399 103 printTimeStamp();
Helmut64 17:98f2528e8399 104 #ifdef FEATURE_USBSERIAL
Helmut64 17:98f2528e8399 105 if (usb) {
Helmut64 17:98f2528e8399 106 usb->vprintf_irqsafe(format, arg);
Helmut64 17:98f2528e8399 107 if (newline)
Helmut64 17:98f2528e8399 108 usb->printf_irqsafe("\r\n");
Helmut64 17:98f2528e8399 109 #else
Helmut64 17:98f2528e8399 110 if (0) {
Helmut64 17:98f2528e8399 111 #endif
Helmut64 17:98f2528e8399 112 } else if (ser) {
Helmut64 17:98f2528e8399 113 // serial jas
Helmut64 17:98f2528e8399 114 int r = 0;
Helmut64 17:98f2528e8399 115 r = vsnprintf(NULL, 0, format, arg);
Helmut64 17:98f2528e8399 116 if (r < 82) {
Helmut64 17:98f2528e8399 117 char buffer[82+1];
Helmut64 17:98f2528e8399 118
Helmut64 17:98f2528e8399 119 vsnprintf(buffer, sizeof(buffer), format, arg);
Helmut64 17:98f2528e8399 120 r = ser->write(buffer, r);
Helmut64 17:98f2528e8399 121 } else {
Helmut64 17:98f2528e8399 122 char *buffer = new char[r+1];
Helmut64 17:98f2528e8399 123 if (buffer) {
Helmut64 17:98f2528e8399 124 vsnprintf(buffer, r+1, format, arg);
Helmut64 17:98f2528e8399 125 r = ser->write(buffer, r);
Helmut64 17:98f2528e8399 126 delete[] buffer;
Helmut64 17:98f2528e8399 127 } else {
Helmut64 17:98f2528e8399 128 error("%s %d cannot alloc memory (%d bytes)!\r\n", __FILE__, __LINE__, r+1);
Helmut64 17:98f2528e8399 129 r = 0;
Helmut64 17:98f2528e8399 130 }
Helmut64 17:98f2528e8399 131 }
Helmut64 17:98f2528e8399 132 if (newline)
Helmut64 17:98f2528e8399 133 ser->write("\r\n", 2);
Helmut64 17:98f2528e8399 134 }
Helmut64 17:98f2528e8399 135 }
Helmut64 17:98f2528e8399 136
Helmut64 17:98f2528e8399 137
Helmut64 17:98f2528e8399 138 void dump(const char *title, const void *data, int len, bool dwords)
Helmut64 17:98f2528e8399 139 {
Helmut64 17:98f2528e8399 140 dprintf("dump(\"%s\", 0x%x, %d bytes)", title, data, len);
Helmut64 17:98f2528e8399 141
Helmut64 17:98f2528e8399 142 int i, j, cnt;
Helmut64 17:98f2528e8399 143 unsigned char *u;
Helmut64 17:98f2528e8399 144 const int width = 16;
Helmut64 17:98f2528e8399 145 const int seppos = 7;
Helmut64 17:98f2528e8399 146
Helmut64 17:98f2528e8399 147 cnt = 0;
Helmut64 17:98f2528e8399 148 u = (unsigned char *)data;
Helmut64 17:98f2528e8399 149 while (len > 0) {
Helmut64 17:98f2528e8399 150 rprintf("%08x: ", (unsigned int)data + cnt);
Helmut64 17:98f2528e8399 151 if (dwords) {
Helmut64 17:98f2528e8399 152 unsigned int *ip = ( unsigned int *)u;
Helmut64 17:98f2528e8399 153 rprintf(" 0x%08x\r\n", *ip);
Helmut64 17:98f2528e8399 154 u+= 4;
Helmut64 17:98f2528e8399 155 len -= 4;
Helmut64 17:98f2528e8399 156 cnt += 4;
Helmut64 17:98f2528e8399 157 continue;
Helmut64 17:98f2528e8399 158 }
Helmut64 17:98f2528e8399 159 cnt += width;
Helmut64 17:98f2528e8399 160 j = len < width ? len : width;
Helmut64 17:98f2528e8399 161 for (i = 0; i < j; i++) {
Helmut64 17:98f2528e8399 162 rprintf("%2.2x ", *(u + i));
Helmut64 17:98f2528e8399 163 if (i == seppos)
Helmut64 17:98f2528e8399 164 rprintf(" ");
Helmut64 17:98f2528e8399 165 }
Helmut64 17:98f2528e8399 166 rprintf(" ");
Helmut64 17:98f2528e8399 167 if (j < width) {
Helmut64 17:98f2528e8399 168 i = width - j;
Helmut64 17:98f2528e8399 169 if (i > seppos + 1)
Helmut64 17:98f2528e8399 170 rprintf(" ");
Helmut64 17:98f2528e8399 171 while (i--) {
Helmut64 17:98f2528e8399 172 rprintf("%s", " ");
Helmut64 17:98f2528e8399 173 }
Helmut64 17:98f2528e8399 174 }
Helmut64 17:98f2528e8399 175 for (i = 0; i < j; i++) {
Helmut64 17:98f2528e8399 176 int c = *(u + i);
Helmut64 17:98f2528e8399 177 if (c >= ' ' && c <= '~')
Helmut64 17:98f2528e8399 178 rprintf("%c", c);
Helmut64 17:98f2528e8399 179 else
Helmut64 17:98f2528e8399 180 rprintf(".");
Helmut64 17:98f2528e8399 181 if (i == seppos)
Helmut64 17:98f2528e8399 182 rprintf(" ");
Helmut64 17:98f2528e8399 183 }
Helmut64 17:98f2528e8399 184 len -= width;
Helmut64 17:98f2528e8399 185 u += width;
Helmut64 17:98f2528e8399 186 rprintf("\r\n");
Helmut64 17:98f2528e8399 187 }
Helmut64 17:98f2528e8399 188 rprintf("--\r\n");
Helmut64 17:98f2528e8399 189 }
Helmut64 17:98f2528e8399 190
Helmut64 17:98f2528e8399 191 /*
Helmut64 17:98f2528e8399 192 * Convert compile time to system time
Helmut64 17:98f2528e8399 193 */
Helmut64 17:98f2528e8399 194 time_t
Helmut64 17:98f2528e8399 195 cvt_date(char const *date, char const *time)
Helmut64 17:98f2528e8399 196 {
Helmut64 17:98f2528e8399 197 char s_month[5];
Helmut64 17:98f2528e8399 198 int year;
Helmut64 17:98f2528e8399 199 struct tm t;
Helmut64 17:98f2528e8399 200 static const char month_names[] = "JanFebMarAprMayJunJulAugSepOctNovDec";
Helmut64 17:98f2528e8399 201 sscanf(date, "%s %d %d", s_month, &t.tm_mday, &year);
Helmut64 17:98f2528e8399 202 sscanf(time, "%2d %*c %2d %*c %2d", &t.tm_hour, &t.tm_min, &t.tm_sec);
Helmut64 17:98f2528e8399 203 // Find where is s_month in month_names. Deduce month value.
Helmut64 17:98f2528e8399 204 t.tm_mon = (strstr(month_names, s_month) - month_names) / 3;
Helmut64 17:98f2528e8399 205 t.tm_year = year - 1900;
Helmut64 17:98f2528e8399 206 return (int)mktime(&t);
Helmut64 17:98f2528e8399 207 }