Thiago Lima / SX1276GenericLib

test

Dependents:   Telemetria_RX_SD_GPS_copy Telemetria_RX_SD_GPS Telemetria_TX Telemetria_TX ... more

sx1276/arduino-mbed.cpp@65:b2d98328fcba, 2017-07-11 (annotated)

Committer:
Helmut Tschemernjak
Date:
Tue Jul 11 13:32:34 2017 +0200
Revision:
65:b2d98328fcba
Parent:
sx1276/sx1276-arduino-hal.cpp@61:08b50780eb91
Child:
66:fbb2da34bd9a
Added Arduino Support, it still needs further testing

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Helmut Tschemernjak 46:e78a1d0391ac 1 /*
Helmut Tschemernjak 65:b2d98328fcba 2 * The file is Licensed under the Apache License, Version 2.0
Helmut Tschemernjak 46:e78a1d0391ac 3 * (c) 2017 Helmut Tschemernjak
Helmut Tschemernjak 46:e78a1d0391ac 4 * 30826 Garbsen (Hannover) Germany
Helmut Tschemernjak 46:e78a1d0391ac 5 */
Helmut Tschemernjak 46:e78a1d0391ac 6
Helmut Tschemernjak 65:b2d98328fcba 7 #ifdef ARDUINO
Helmut Tschemernjak 65:b2d98328fcba 8
Helmut Tschemernjak 65:b2d98328fcba 9 using namespace std;
Helmut Tschemernjak 65:b2d98328fcba 10
Helmut Tschemernjak 65:b2d98328fcba 11 #include "arduino-mbed.h"
Helmut Tschemernjak 65:b2d98328fcba 12
Helmut Tschemernjak 65:b2d98328fcba 13
Helmut Tschemernjak 65:b2d98328fcba 14 static void pinInt00(void);
Helmut Tschemernjak 65:b2d98328fcba 15 static void pinInt01(void);
Helmut Tschemernjak 65:b2d98328fcba 16 static void pinInt02(void);
Helmut Tschemernjak 65:b2d98328fcba 17 static void pinInt03(void);
Helmut Tschemernjak 65:b2d98328fcba 18 static void pinInt04(void);
Helmut Tschemernjak 65:b2d98328fcba 19 static void pinInt05(void);
Helmut Tschemernjak 65:b2d98328fcba 20 static void pinInt06(void);
Helmut Tschemernjak 65:b2d98328fcba 21 static void pinInt07(void);
Helmut Tschemernjak 65:b2d98328fcba 22 static void pinInt08(void);
Helmut Tschemernjak 65:b2d98328fcba 23 static void pinInt09(void);
Helmut Tschemernjak 65:b2d98328fcba 24 static void pinInt10(void);
Helmut Tschemernjak 65:b2d98328fcba 25 static void pinInt11(void);
Helmut Tschemernjak 65:b2d98328fcba 26 static void pinInt12(void);
Helmut Tschemernjak 65:b2d98328fcba 27 static void pinInt13(void);
Helmut Tschemernjak 65:b2d98328fcba 28 static void pinInt14(void);
Helmut Tschemernjak 65:b2d98328fcba 29 static void pinInt15(void);
Helmut Tschemernjak 65:b2d98328fcba 30 static void pinInt16(void);
Helmut Tschemernjak 65:b2d98328fcba 31 static void pinInt17(void);
Helmut Tschemernjak 65:b2d98328fcba 32 static void pinInt18(void);
Helmut Tschemernjak 65:b2d98328fcba 33 static void pinInt19(void);
Helmut Tschemernjak 65:b2d98328fcba 34 static void pinInt20(void);
Helmut Tschemernjak 65:b2d98328fcba 35 static void pinInt21(void);
Helmut Tschemernjak 65:b2d98328fcba 36 static void pinInt22(void);
Helmut Tschemernjak 65:b2d98328fcba 37 static void pinInt23(void);
Helmut Tschemernjak 65:b2d98328fcba 38 static void pinInt24(void);
Helmut Tschemernjak 65:b2d98328fcba 39 static void pinInt25(void);
Helmut Tschemernjak 65:b2d98328fcba 40 static void pinInt26(void);
Helmut Tschemernjak 65:b2d98328fcba 41 static void pinInt27(void);
Helmut Tschemernjak 65:b2d98328fcba 42 static void pinInt28(void);
Helmut Tschemernjak 65:b2d98328fcba 43 static void pinInt29(void);
Helmut Tschemernjak 65:b2d98328fcba 44 static void pinInt30(void);
Helmut Tschemernjak 65:b2d98328fcba 45 static void pinInt31(void);
Helmut Tschemernjak 65:b2d98328fcba 46 static void pinInt32(void);
Helmut Tschemernjak 65:b2d98328fcba 47 static void pinInt33(void);
Helmut Tschemernjak 65:b2d98328fcba 48 static void pinInt34(void);
Helmut Tschemernjak 65:b2d98328fcba 49 static void pinInt35(void);
Helmut Tschemernjak 65:b2d98328fcba 50 static void pinInt36(void);
Helmut Tschemernjak 65:b2d98328fcba 51 static void pinInt37(void);
Helmut Tschemernjak 65:b2d98328fcba 52 static void pinInt38(void);
Helmut Tschemernjak 65:b2d98328fcba 53 static void pinInt39(void);
Helmut Tschemernjak 65:b2d98328fcba 54 static void pinInt40(void);
Helmut Tschemernjak 65:b2d98328fcba 55 static void pinInt41(void);
Helmut Tschemernjak 65:b2d98328fcba 56 static void pinInt42(void);
Helmut Tschemernjak 65:b2d98328fcba 57 static void pinInt43(void);
Helmut Tschemernjak 65:b2d98328fcba 58 static void pinInt44(void);
Helmut Tschemernjak 65:b2d98328fcba 59 static void pinInt45(void);
Helmut Tschemernjak 65:b2d98328fcba 60 static void pinInt46(void);
Helmut Tschemernjak 65:b2d98328fcba 61 static void pinInt47(void);
Helmut Tschemernjak 46:e78a1d0391ac 62
Helmut Tschemernjak 46:e78a1d0391ac 63
Helmut Tschemernjak 46:e78a1d0391ac 64
Helmut Tschemernjak 65:b2d98328fcba 65 #define MAX_MCU_PINS 48
Helmut Tschemernjak 65:b2d98328fcba 66 class InterruptIn;
Helmut Tschemernjak 65:b2d98328fcba 67 struct intPtrTable {
Helmut Tschemernjak 65:b2d98328fcba 68 void (*func)(void);
Helmut Tschemernjak 65:b2d98328fcba 69 InterruptIn *context;
Helmut Tschemernjak 65:b2d98328fcba 70 } intPtrTable[MAX_MCU_PINS] = {
Helmut Tschemernjak 65:b2d98328fcba 71 { pinInt00, NULL },
Helmut Tschemernjak 65:b2d98328fcba 72 { pinInt01, NULL },
Helmut Tschemernjak 65:b2d98328fcba 73 { pinInt02, NULL },
Helmut Tschemernjak 65:b2d98328fcba 74 { pinInt03, NULL },
Helmut Tschemernjak 65:b2d98328fcba 75 { pinInt04, NULL },
Helmut Tschemernjak 65:b2d98328fcba 76 { pinInt05, NULL },
Helmut Tschemernjak 65:b2d98328fcba 77 { pinInt06, NULL },
Helmut Tschemernjak 65:b2d98328fcba 78 { pinInt07, NULL },
Helmut Tschemernjak 65:b2d98328fcba 79 { pinInt08, NULL },
Helmut Tschemernjak 65:b2d98328fcba 80 { pinInt09, NULL },
Helmut Tschemernjak 65:b2d98328fcba 81 { pinInt10, NULL },
Helmut Tschemernjak 65:b2d98328fcba 82 { pinInt11, NULL },
Helmut Tschemernjak 65:b2d98328fcba 83 { pinInt12, NULL },
Helmut Tschemernjak 65:b2d98328fcba 84 { pinInt13, NULL },
Helmut Tschemernjak 65:b2d98328fcba 85 { pinInt14, NULL },
Helmut Tschemernjak 65:b2d98328fcba 86 { pinInt15, NULL },
Helmut Tschemernjak 65:b2d98328fcba 87 { pinInt16, NULL },
Helmut Tschemernjak 65:b2d98328fcba 88 { pinInt17, NULL },
Helmut Tschemernjak 65:b2d98328fcba 89 { pinInt18, NULL },
Helmut Tschemernjak 65:b2d98328fcba 90 { pinInt19, NULL },
Helmut Tschemernjak 65:b2d98328fcba 91 { pinInt20, NULL },
Helmut Tschemernjak 65:b2d98328fcba 92 { pinInt21, NULL },
Helmut Tschemernjak 65:b2d98328fcba 93 { pinInt22, NULL },
Helmut Tschemernjak 65:b2d98328fcba 94 { pinInt23, NULL },
Helmut Tschemernjak 65:b2d98328fcba 95 { pinInt24, NULL },
Helmut Tschemernjak 65:b2d98328fcba 96 { pinInt25, NULL },
Helmut Tschemernjak 65:b2d98328fcba 97 { pinInt26, NULL },
Helmut Tschemernjak 65:b2d98328fcba 98 { pinInt27, NULL },
Helmut Tschemernjak 65:b2d98328fcba 99 { pinInt28, NULL },
Helmut Tschemernjak 65:b2d98328fcba 100 { pinInt29, NULL },
Helmut Tschemernjak 65:b2d98328fcba 101 { pinInt30, NULL },
Helmut Tschemernjak 65:b2d98328fcba 102 { pinInt31, NULL },
Helmut Tschemernjak 65:b2d98328fcba 103 { pinInt32, NULL },
Helmut Tschemernjak 65:b2d98328fcba 104 { pinInt33, NULL },
Helmut Tschemernjak 65:b2d98328fcba 105 { pinInt34, NULL },
Helmut Tschemernjak 65:b2d98328fcba 106 { pinInt35, NULL },
Helmut Tschemernjak 65:b2d98328fcba 107 { pinInt36, NULL },
Helmut Tschemernjak 65:b2d98328fcba 108 { pinInt37, NULL },
Helmut Tschemernjak 65:b2d98328fcba 109 { pinInt38, NULL },
Helmut Tschemernjak 65:b2d98328fcba 110 { pinInt39, NULL },
Helmut Tschemernjak 65:b2d98328fcba 111 { pinInt40, NULL },
Helmut Tschemernjak 65:b2d98328fcba 112 { pinInt41, NULL },
Helmut Tschemernjak 65:b2d98328fcba 113 { pinInt42, NULL },
Helmut Tschemernjak 65:b2d98328fcba 114 { pinInt43, NULL },
Helmut Tschemernjak 65:b2d98328fcba 115 { pinInt44, NULL },
Helmut Tschemernjak 65:b2d98328fcba 116 { pinInt45, NULL },
Helmut Tschemernjak 65:b2d98328fcba 117 { pinInt46, NULL },
Helmut Tschemernjak 65:b2d98328fcba 118 { pinInt47, NULL }
Helmut Tschemernjak 65:b2d98328fcba 119 }; // our max MCUs pins
Helmut Tschemernjak 46:e78a1d0391ac 120
Helmut Tschemernjak 46:e78a1d0391ac 121
Helmut Tschemernjak 46:e78a1d0391ac 122
Helmut Tschemernjak 65:b2d98328fcba 123 static void pinInt00(void) { InterruptIn::_irq_handler(intPtrTable[0].context); }
Helmut Tschemernjak 65:b2d98328fcba 124 static void pinInt01(void) { InterruptIn::_irq_handler(intPtrTable[1].context); }
Helmut Tschemernjak 65:b2d98328fcba 125 static void pinInt02(void) { InterruptIn::_irq_handler(intPtrTable[2].context); }
Helmut Tschemernjak 65:b2d98328fcba 126 static void pinInt03(void) { InterruptIn::_irq_handler(intPtrTable[3].context); }
Helmut Tschemernjak 65:b2d98328fcba 127 static void pinInt04(void) { InterruptIn::_irq_handler(intPtrTable[4].context); }
Helmut Tschemernjak 65:b2d98328fcba 128 static void pinInt05(void) { InterruptIn::_irq_handler(intPtrTable[5].context); }
Helmut Tschemernjak 65:b2d98328fcba 129 static void pinInt06(void) { InterruptIn::_irq_handler(intPtrTable[6].context); }
Helmut Tschemernjak 65:b2d98328fcba 130 static void pinInt07(void) { InterruptIn::_irq_handler(intPtrTable[7].context); }
Helmut Tschemernjak 65:b2d98328fcba 131 static void pinInt08(void) { InterruptIn::_irq_handler(intPtrTable[8].context); }
Helmut Tschemernjak 65:b2d98328fcba 132 static void pinInt09(void) { InterruptIn::_irq_handler(intPtrTable[9].context); }
Helmut Tschemernjak 65:b2d98328fcba 133 static void pinInt10(void) { InterruptIn::_irq_handler(intPtrTable[10].context); }
Helmut Tschemernjak 65:b2d98328fcba 134 static void pinInt11(void) { InterruptIn::_irq_handler(intPtrTable[11].context); }
Helmut Tschemernjak 65:b2d98328fcba 135 static void pinInt12(void) { InterruptIn::_irq_handler(intPtrTable[12].context); }
Helmut Tschemernjak 65:b2d98328fcba 136 static void pinInt13(void) { InterruptIn::_irq_handler(intPtrTable[13].context); }
Helmut Tschemernjak 65:b2d98328fcba 137 static void pinInt14(void) { InterruptIn::_irq_handler(intPtrTable[14].context); }
Helmut Tschemernjak 65:b2d98328fcba 138 static void pinInt15(void) { InterruptIn::_irq_handler(intPtrTable[15].context); }
Helmut Tschemernjak 65:b2d98328fcba 139 static void pinInt16(void) { InterruptIn::_irq_handler(intPtrTable[16].context); }
Helmut Tschemernjak 65:b2d98328fcba 140 static void pinInt17(void) { InterruptIn::_irq_handler(intPtrTable[17].context); }
Helmut Tschemernjak 65:b2d98328fcba 141 static void pinInt18(void) { InterruptIn::_irq_handler(intPtrTable[18].context); }
Helmut Tschemernjak 65:b2d98328fcba 142 static void pinInt19(void) { InterruptIn::_irq_handler(intPtrTable[19].context); }
Helmut Tschemernjak 65:b2d98328fcba 143 static void pinInt20(void) { InterruptIn::_irq_handler(intPtrTable[20].context); }
Helmut Tschemernjak 65:b2d98328fcba 144 static void pinInt21(void) { InterruptIn::_irq_handler(intPtrTable[21].context); }
Helmut Tschemernjak 65:b2d98328fcba 145 static void pinInt22(void) { InterruptIn::_irq_handler(intPtrTable[22].context); }
Helmut Tschemernjak 65:b2d98328fcba 146 static void pinInt23(void) { InterruptIn::_irq_handler(intPtrTable[23].context); }
Helmut Tschemernjak 65:b2d98328fcba 147 static void pinInt24(void) { InterruptIn::_irq_handler(intPtrTable[24].context); }
Helmut Tschemernjak 65:b2d98328fcba 148 static void pinInt25(void) { InterruptIn::_irq_handler(intPtrTable[25].context); }
Helmut Tschemernjak 65:b2d98328fcba 149 static void pinInt26(void) { InterruptIn::_irq_handler(intPtrTable[26].context); }
Helmut Tschemernjak 65:b2d98328fcba 150 static void pinInt27(void) { InterruptIn::_irq_handler(intPtrTable[27].context); }
Helmut Tschemernjak 65:b2d98328fcba 151 static void pinInt28(void) { InterruptIn::_irq_handler(intPtrTable[28].context); }
Helmut Tschemernjak 65:b2d98328fcba 152 static void pinInt29(void) { InterruptIn::_irq_handler(intPtrTable[29].context); }
Helmut Tschemernjak 65:b2d98328fcba 153 static void pinInt30(void) { InterruptIn::_irq_handler(intPtrTable[30].context); }
Helmut Tschemernjak 65:b2d98328fcba 154 static void pinInt31(void) { InterruptIn::_irq_handler(intPtrTable[31].context); }
Helmut Tschemernjak 65:b2d98328fcba 155 static void pinInt32(void) { InterruptIn::_irq_handler(intPtrTable[32].context); }
Helmut Tschemernjak 65:b2d98328fcba 156 static void pinInt33(void) { InterruptIn::_irq_handler(intPtrTable[33].context); }
Helmut Tschemernjak 65:b2d98328fcba 157 static void pinInt34(void) { InterruptIn::_irq_handler(intPtrTable[34].context); }
Helmut Tschemernjak 65:b2d98328fcba 158 static void pinInt35(void) { InterruptIn::_irq_handler(intPtrTable[35].context); }
Helmut Tschemernjak 65:b2d98328fcba 159 static void pinInt36(void) { InterruptIn::_irq_handler(intPtrTable[36].context); }
Helmut Tschemernjak 65:b2d98328fcba 160 static void pinInt37(void) { InterruptIn::_irq_handler(intPtrTable[37].context); }
Helmut Tschemernjak 65:b2d98328fcba 161 static void pinInt38(void) { InterruptIn::_irq_handler(intPtrTable[38].context); }
Helmut Tschemernjak 65:b2d98328fcba 162 static void pinInt39(void) { InterruptIn::_irq_handler(intPtrTable[39].context); }
Helmut Tschemernjak 65:b2d98328fcba 163 static void pinInt40(void) { InterruptIn::_irq_handler(intPtrTable[40].context); }
Helmut Tschemernjak 65:b2d98328fcba 164 static void pinInt41(void) { InterruptIn::_irq_handler(intPtrTable[41].context); }
Helmut Tschemernjak 65:b2d98328fcba 165 static void pinInt42(void) { InterruptIn::_irq_handler(intPtrTable[42].context); }
Helmut Tschemernjak 65:b2d98328fcba 166 static void pinInt43(void) { InterruptIn::_irq_handler(intPtrTable[43].context); }
Helmut Tschemernjak 65:b2d98328fcba 167 static void pinInt44(void) { InterruptIn::_irq_handler(intPtrTable[44].context); }
Helmut Tschemernjak 65:b2d98328fcba 168 static void pinInt45(void) { InterruptIn::_irq_handler(intPtrTable[45].context); }
Helmut Tschemernjak 65:b2d98328fcba 169 static void pinInt46(void) { InterruptIn::_irq_handler(intPtrTable[46].context); }
Helmut Tschemernjak 65:b2d98328fcba 170 static void pinInt47(void) { InterruptIn::_irq_handler(intPtrTable[47].context); }
Helmut Tschemernjak 46:e78a1d0391ac 171
Helmut Tschemernjak 46:e78a1d0391ac 172
Helmut Tschemernjak 65:b2d98328fcba 173
Helmut Tschemernjak 46:e78a1d0391ac 174
Helmut Tschemernjak 65:b2d98328fcba 175 void
Helmut Tschemernjak 65:b2d98328fcba 176 InterruptIn::rise(Callback<void()> func) {
Helmut Tschemernjak 65:b2d98328fcba 177 if (_gpioPin >= MAX_MCU_PINS-1)
Helmut Tschemernjak 65:b2d98328fcba 178 return;
Helmut Tschemernjak 65:b2d98328fcba 179 if (func) {
Helmut Tschemernjak 65:b2d98328fcba 180 _func = func;
Helmut Tschemernjak 65:b2d98328fcba 181 intPtrTable[_gpioPin].context = this;
Helmut Tschemernjak 65:b2d98328fcba 182 attachInterrupt(digitalPinToInterrupt(_gpioPin), intPtrTable[_gpioPin].func, RISING);
Helmut Tschemernjak 65:b2d98328fcba 183 } else {
Helmut Tschemernjak 65:b2d98328fcba 184 _func = InterruptIn::donothing;
Helmut Tschemernjak 65:b2d98328fcba 185 intPtrTable[_gpioPin].context = NULL;
Helmut Tschemernjak 65:b2d98328fcba 186 detachInterrupt(_gpioPin);
Helmut Tschemernjak 46:e78a1d0391ac 187 }
Helmut Tschemernjak 65:b2d98328fcba 188 };
Helmut Tschemernjak 46:e78a1d0391ac 189
Helmut Tschemernjak 65:b2d98328fcba 190 void
Helmut Tschemernjak 65:b2d98328fcba 191 InterruptIn::fall(Callback<void()> func) {
Helmut Tschemernjak 65:b2d98328fcba 192 if (func) {
Helmut Tschemernjak 65:b2d98328fcba 193 _func = func;
Helmut Tschemernjak 65:b2d98328fcba 194 intPtrTable[_gpioPin].context = this;
Helmut Tschemernjak 65:b2d98328fcba 195 attachInterrupt(digitalPinToInterrupt(_gpioPin), intPtrTable[_gpioPin].func, FALLING);
Helmut Tschemernjak 65:b2d98328fcba 196 } else {
Helmut Tschemernjak 65:b2d98328fcba 197 _func = InterruptIn::donothing;
Helmut Tschemernjak 65:b2d98328fcba 198 intPtrTable[_gpioPin].context = NULL;
Helmut Tschemernjak 65:b2d98328fcba 199 detachInterrupt(_gpioPin);
Helmut Tschemernjak 46:e78a1d0391ac 200 }
Helmut Tschemernjak 46:e78a1d0391ac 201 }
Helmut Tschemernjak 46:e78a1d0391ac 202
Helmut Tschemernjak 46:e78a1d0391ac 203
Helmut Tschemernjak 65:b2d98328fcba 204 #define MAX_TIMEOUTS 10
Helmut Tschemernjak 65:b2d98328fcba 205 class Timeout;
Helmut Tschemernjak 65:b2d98328fcba 206 struct TimeoutVector {
Helmut Tschemernjak 65:b2d98328fcba 207 Timeout *timer;
Helmut Tschemernjak 65:b2d98328fcba 208 volatile uint32_t timeout; // us
Helmut Tschemernjak 65:b2d98328fcba 209 } TimeOuts[MAX_TIMEOUTS];
Helmut Tschemernjak 65:b2d98328fcba 210
Helmut Tschemernjak 65:b2d98328fcba 211
Helmut Tschemernjak 65:b2d98328fcba 212 #if defined(__SAMD21G18A__) || defined(__SAMD21J18A__)
Helmut Tschemernjak 65:b2d98328fcba 213 /*
Helmut Tschemernjak 65:b2d98328fcba 214 * __SAMD21J18A__ is the SamD21 Explained Board
Helmut Tschemernjak 65:b2d98328fcba 215 * __SAMD21G18A__ is Genuino Zero-Board (compatible with the LoRa board)
Helmut Tschemernjak 65:b2d98328fcba 216 */
Helmut Tschemernjak 65:b2d98328fcba 217
Helmut Tschemernjak 65:b2d98328fcba 218 /*
Helmut Tschemernjak 65:b2d98328fcba 219 * see tcc.h included from
Helmut Tschemernjak 65:b2d98328fcba 220 * Arduino15/packages/arduino/tools/CMSIS-Atmel/1.1.0/CMSIS/
Helmut Tschemernjak 65:b2d98328fcba 221 * Device/ATMEL/samd21/include/component/tcc.h
Helmut Tschemernjak 65:b2d98328fcba 222 */
Helmut Tschemernjak 65:b2d98328fcba 223 static const struct TCC_CONFIG {
Helmut Tschemernjak 65:b2d98328fcba 224 Tcc *tcc_ptr;
Helmut Tschemernjak 65:b2d98328fcba 225 IRQn_Type tcc_irq;
Helmut Tschemernjak 65:b2d98328fcba 226 uint8_t nbits;
Helmut Tschemernjak 65:b2d98328fcba 227 } TCC_CONFIG[] {
Helmut Tschemernjak 65:b2d98328fcba 228 { TCC0, TCC0_IRQn, 24 },
Helmut Tschemernjak 65:b2d98328fcba 229 { TCC1, TCC1_IRQn, 24 },
Helmut Tschemernjak 65:b2d98328fcba 230 { TCC2, TCC2_IRQn, 16 },
Helmut Tschemernjak 65:b2d98328fcba 231 };
Helmut Tschemernjak 65:b2d98328fcba 232 #define USE_TCC 0 // TCC0, TTC1, TTC2 are working using the Arduino D21
Helmut Tschemernjak 65:b2d98328fcba 233
Helmut Tschemernjak 65:b2d98328fcba 234
Helmut Tschemernjak 65:b2d98328fcba 235 static bool initTimerDone = false;
Helmut Tschemernjak 65:b2d98328fcba 236
Helmut Tschemernjak 65:b2d98328fcba 237 static void initTimer() {
Helmut Tschemernjak 65:b2d98328fcba 238 Tcc *TC = TCC_CONFIG[USE_TCC].tcc_ptr;
Helmut Tschemernjak 65:b2d98328fcba 239
Helmut Tschemernjak 65:b2d98328fcba 240 // Enable clock for TC, see gclk.h
Helmut Tschemernjak 65:b2d98328fcba 241 if (TC == TCC0 || TC == TCC1) {
Helmut Tschemernjak 65:b2d98328fcba 242 REG_GCLK_CLKCTRL = (uint16_t) (GCLK_CLKCTRL_CLKEN | GCLK_CLKCTRL_GEN_GCLK0 | GCLK_CLKCTRL_ID_TCC0_TCC1);
Helmut Tschemernjak 65:b2d98328fcba 243 } else if (TC == TCC2) {
Helmut Tschemernjak 65:b2d98328fcba 244 REG_GCLK_CLKCTRL = (uint16_t) (GCLK_CLKCTRL_CLKEN | GCLK_CLKCTRL_GEN_GCLK0 | GCLK_CLKCTRL_ID_TCC2_TC3_Val);
Helmut Tschemernjak 46:e78a1d0391ac 245 }
Helmut Tschemernjak 65:b2d98328fcba 246 while (GCLK->STATUS.bit.SYNCBUSY == 1); // wait for sync
Helmut Tschemernjak 65:b2d98328fcba 247
Helmut Tschemernjak 65:b2d98328fcba 248 TC->CTRLA.reg &= ~TCC_CTRLA_ENABLE; // Disable TC
Helmut Tschemernjak 65:b2d98328fcba 249 while (TC->SYNCBUSY.bit.ENABLE == 1); // wait for sync
Helmut Tschemernjak 65:b2d98328fcba 250
Helmut Tschemernjak 65:b2d98328fcba 251 TC->CTRLA.reg |= (TCC_CTRLA_PRESCALER_DIV1024 | TCC_CTRLA_RUNSTDBY); // Set perscaler
Helmut Tschemernjak 65:b2d98328fcba 252
Helmut Tschemernjak 65:b2d98328fcba 253 TC->WAVE.reg |= TCC_WAVE_WAVEGEN_NFRQ; // Set wave form configuration
Helmut Tschemernjak 65:b2d98328fcba 254 while (TC->SYNCBUSY.bit.WAVE == 1); // wait for sync
Helmut Tschemernjak 65:b2d98328fcba 255
Helmut Tschemernjak 65:b2d98328fcba 256 TC->PER.bit.PER = 0xFFFFFF; // set counter top to max 24 bit
Helmut Tschemernjak 65:b2d98328fcba 257 while (TC->SYNCBUSY.bit.PER == 1); // wait for sync
Helmut Tschemernjak 65:b2d98328fcba 258
Helmut Tschemernjak 65:b2d98328fcba 259 // the compare counter TC->CC[0].reg will be set in the startTimer
Helmut Tschemernjak 65:b2d98328fcba 260 // after the timeout calculation is known.
Helmut Tschemernjak 65:b2d98328fcba 261
Helmut Tschemernjak 65:b2d98328fcba 262 // Interrupts
Helmut Tschemernjak 65:b2d98328fcba 263 TC->INTENSET.reg = 0; // disable all interrupts
Helmut Tschemernjak 65:b2d98328fcba 264 TC->INTENSET.bit.OVF = 1; // enable overfollow
Helmut Tschemernjak 65:b2d98328fcba 265 TC->INTENSET.bit.MC0 = 1; // enable compare match to CC0
Helmut Tschemernjak 65:b2d98328fcba 266
Helmut Tschemernjak 65:b2d98328fcba 267 NVIC_EnableIRQ( TCC_CONFIG[USE_TCC].tcc_irq); // Enable InterruptVector
Helmut Tschemernjak 65:b2d98328fcba 268 initTimerDone = true;
Helmut Tschemernjak 46:e78a1d0391ac 269 }
Helmut Tschemernjak 46:e78a1d0391ac 270
Helmut Tschemernjak 65:b2d98328fcba 271 static void stopTimer(void)
Helmut Tschemernjak 46:e78a1d0391ac 272 {
Helmut Tschemernjak 65:b2d98328fcba 273 Tcc *TC = TCC_CONFIG[USE_TCC].tcc_ptr;
Helmut Tschemernjak 65:b2d98328fcba 274
Helmut Tschemernjak 65:b2d98328fcba 275 TC->CTRLA.reg &= ~TCC_CTRLA_ENABLE; // Disable TC
Helmut Tschemernjak 65:b2d98328fcba 276 while (TC->SYNCBUSY.bit.ENABLE == 1); // wait for sync
Helmut Tschemernjak 46:e78a1d0391ac 277 }
Helmut Tschemernjak 46:e78a1d0391ac 278
Helmut Tschemernjak 65:b2d98328fcba 279 static void startTimer(uint32_t delay_us)
Helmut Tschemernjak 46:e78a1d0391ac 280 {
Helmut Tschemernjak 65:b2d98328fcba 281 Tcc *TC = TCC_CONFIG[USE_TCC].tcc_ptr;
Helmut Tschemernjak 65:b2d98328fcba 282
Helmut Tschemernjak 65:b2d98328fcba 283 if (!initTimerDone)
Helmut Tschemernjak 65:b2d98328fcba 284 initTimer(); // initial setup with stopped timer
Helmut Tschemernjak 65:b2d98328fcba 285
Helmut Tschemernjak 65:b2d98328fcba 286 stopTimer(); // avoid timer interrupts while calculating
Helmut Tschemernjak 46:e78a1d0391ac 287
Helmut Tschemernjak 65:b2d98328fcba 288 /*
Helmut Tschemernjak 65:b2d98328fcba 289 * every 21333 ns equals one tick (1/(48000000/1024))
Helmut Tschemernjak 65:b2d98328fcba 290 * COUNT*DIVIDER*SECS until interrupt
Helmut Tschemernjak 65:b2d98328fcba 291 * 48 Mhz = (65536*1024)/1.398636s
Helmut Tschemernjak 65:b2d98328fcba 292 */
Helmut Tschemernjak 65:b2d98328fcba 293 long long nclocks = delay_us * 1000; // ns;
Helmut Tschemernjak 65:b2d98328fcba 294 nclocks = nclocks / 21333;
Helmut Tschemernjak 65:b2d98328fcba 295 int nCounts = nclocks;
Helmut Tschemernjak 65:b2d98328fcba 296
Helmut Tschemernjak 65:b2d98328fcba 297 int bits = TCC_CONFIG[USE_TCC].nbits;
Helmut Tschemernjak 65:b2d98328fcba 298 int maxCounts = (uint32_t)(1<<bits)-1;
Helmut Tschemernjak 46:e78a1d0391ac 299
Helmut Tschemernjak 65:b2d98328fcba 300 if (nCounts > maxCounts) // if count exceeds timer capacity
Helmut Tschemernjak 65:b2d98328fcba 301 nCounts = maxCounts; // set the largest posible count.
Helmut Tschemernjak 65:b2d98328fcba 302 if (nCounts == 0)
Helmut Tschemernjak 65:b2d98328fcba 303 nCounts = 1;
Helmut Tschemernjak 65:b2d98328fcba 304 TC->CC[0].bit.CC = nCounts;
Helmut Tschemernjak 65:b2d98328fcba 305 while (TC->SYNCBUSY.bit.CC0 == 1); // wait for sync
Helmut Tschemernjak 46:e78a1d0391ac 306
Helmut Tschemernjak 65:b2d98328fcba 307 TC->CTRLA.reg |= TCC_CTRLA_ENABLE ; // Enable TC
Helmut Tschemernjak 65:b2d98328fcba 308 while (TC->SYNCBUSY.bit.ENABLE == 1); // wait for sync
Helmut Tschemernjak 65:b2d98328fcba 309 #if 1
Helmut Tschemernjak 65:b2d98328fcba 310 Serial.print(millis(), DEC);
Helmut Tschemernjak 65:b2d98328fcba 311 Serial.print(" startTimer: nCounts=");
Helmut Tschemernjak 65:b2d98328fcba 312 Serial.println(nCounts, DEC);
Helmut Tschemernjak 65:b2d98328fcba 313 #endif
Helmut Tschemernjak 46:e78a1d0391ac 314 }
Helmut Tschemernjak 46:e78a1d0391ac 315
Helmut Tschemernjak 46:e78a1d0391ac 316
Helmut Tschemernjak 46:e78a1d0391ac 317
Helmut Tschemernjak 65:b2d98328fcba 318 #if USE_TCC == 0
Helmut Tschemernjak 65:b2d98328fcba 319 void TCC0_Handler()
Helmut Tschemernjak 65:b2d98328fcba 320 #elif USE_TCC == 1
Helmut Tschemernjak 65:b2d98328fcba 321 void TCC1_Handler()
Helmut Tschemernjak 65:b2d98328fcba 322 #elif USE_TCC == 2
Helmut Tschemernjak 65:b2d98328fcba 323 void TCC2_Handler()
Helmut Tschemernjak 65:b2d98328fcba 324 #endif
Helmut Tschemernjak 65:b2d98328fcba 325 {
Helmut Tschemernjak 65:b2d98328fcba 326 static uint32_t last_usecs = 0;
Helmut Tschemernjak 65:b2d98328fcba 327 Tcc *TC = TCC_CONFIG[USE_TCC].tcc_ptr;
Helmut Tschemernjak 65:b2d98328fcba 328 uint32_t usecs = micros();
Helmut Tschemernjak 65:b2d98328fcba 329 uint32_t u_offset = 0;
Helmut Tschemernjak 65:b2d98328fcba 330
Helmut Tschemernjak 65:b2d98328fcba 331 if (last_usecs && last_usecs < usecs) {
Helmut Tschemernjak 65:b2d98328fcba 332 /*
Helmut Tschemernjak 65:b2d98328fcba 333 * Problem is that the micros sometimes gives smaller values
Helmut Tschemernjak 65:b2d98328fcba 334 * compared to previuos micros. As a workaround we all 1ms.
Helmut Tschemernjak 65:b2d98328fcba 335 */
Helmut Tschemernjak 65:b2d98328fcba 336 u_offset = 1000;
Helmut Tschemernjak 65:b2d98328fcba 337 }
Helmut Tschemernjak 65:b2d98328fcba 338 last_usecs = usecs;
Helmut Tschemernjak 46:e78a1d0391ac 339
Helmut Tschemernjak 65:b2d98328fcba 340 /*
Helmut Tschemernjak 65:b2d98328fcba 341 * Overflow means the max timer exeeded, we need restart the timer
Helmut Tschemernjak 65:b2d98328fcba 342 * Interrupts and
Helmut Tschemernjak 65:b2d98328fcba 343 */
Helmut Tschemernjak 65:b2d98328fcba 344 if (TC->INTFLAG.bit.OVF == 1) { // A overflow caused the interrupt
Helmut Tschemernjak 65:b2d98328fcba 345 Serial.print("OVF\r\n");
Helmut Tschemernjak 65:b2d98328fcba 346 TC->INTFLAG.bit.OVF = 1; // writing a one clears the flag ovf flag
Helmut Tschemernjak 65:b2d98328fcba 347 }
Helmut Tschemernjak 65:b2d98328fcba 348
Helmut Tschemernjak 65:b2d98328fcba 349 if (TC->INTFLAG.bit.MC0 == 1) { // A compare to cc0 caused the interrupt
Helmut Tschemernjak 65:b2d98328fcba 350 //Serial.print("MC0\r\n");
Helmut Tschemernjak 65:b2d98328fcba 351 TC->INTFLAG.bit.MC0 = 1; // writing a one clears the MCO (match capture) flag
Helmut Tschemernjak 65:b2d98328fcba 352 }
Helmut Tschemernjak 65:b2d98328fcba 353
Helmut Tschemernjak 65:b2d98328fcba 354 TC->CTRLA.reg &= ~TCC_CTRLA_ENABLE; // Disable TC
Helmut Tschemernjak 65:b2d98328fcba 355 while (TC->SYNCBUSY.bit.ENABLE == 1); // wait for sync
Helmut Tschemernjak 65:b2d98328fcba 356
Helmut Tschemernjak 65:b2d98328fcba 357 for (int i = 0; i < MAX_TIMEOUTS-1; i++) {
Helmut Tschemernjak 65:b2d98328fcba 358 struct TimeoutVector *tvp = &TimeOuts[i];
Helmut Tschemernjak 65:b2d98328fcba 359 if (tvp->timer && tvp->timeout && usecs + u_offset >= tvp->timeout) {
Helmut Tschemernjak 65:b2d98328fcba 360 Timeout *saveTimer = tvp->timer;
Helmut Tschemernjak 65:b2d98328fcba 361 tvp->timer = NULL;
Helmut Tschemernjak 65:b2d98328fcba 362 tvp->timeout = 0;
Helmut Tschemernjak 65:b2d98328fcba 363 Timeout::_irq_handler(saveTimer);
Helmut Tschemernjak 65:b2d98328fcba 364 }
Helmut Tschemernjak 65:b2d98328fcba 365 }
Helmut Tschemernjak 65:b2d98328fcba 366 /*
Helmut Tschemernjak 65:b2d98328fcba 367 * we need to restart the timer for remaining interrupts
Helmut Tschemernjak 65:b2d98328fcba 368 * we provide the interrupt entry time in usecs which means
Helmut Tschemernjak 65:b2d98328fcba 369 * we don't count the irq_hander duration or debug prints
Helmut Tschemernjak 65:b2d98328fcba 370 */
Helmut Tschemernjak 65:b2d98328fcba 371 Timeout::restart(usecs);
Helmut Tschemernjak 65:b2d98328fcba 372 }
Helmut Tschemernjak 65:b2d98328fcba 373
Helmut Tschemernjak 65:b2d98328fcba 374 #endif // D21 TCC Timer
Helmut Tschemernjak 65:b2d98328fcba 375
Helmut Tschemernjak 65:b2d98328fcba 376 void
Helmut Tschemernjak 65:b2d98328fcba 377 Timeout::insert(void)
Helmut Tschemernjak 65:b2d98328fcba 378 {
Helmut Tschemernjak 65:b2d98328fcba 379 noInterrupts();
Helmut Tschemernjak 65:b2d98328fcba 380 for (int i = 0; i < MAX_TIMEOUTS-1; i++) {
Helmut Tschemernjak 65:b2d98328fcba 381 struct TimeoutVector *tvp = &TimeOuts[i];
Helmut Tschemernjak 65:b2d98328fcba 382 if (tvp->timer == NULL) {
Helmut Tschemernjak 65:b2d98328fcba 383 tvp->timeout = _timeout;
Helmut Tschemernjak 65:b2d98328fcba 384 tvp->timer = this;
Helmut Tschemernjak 65:b2d98328fcba 385 break;
Helmut Tschemernjak 65:b2d98328fcba 386 }
Helmut Tschemernjak 65:b2d98328fcba 387 }
Helmut Tschemernjak 65:b2d98328fcba 388 interrupts();
Helmut Tschemernjak 65:b2d98328fcba 389 }
Helmut Tschemernjak 65:b2d98328fcba 390
Helmut Tschemernjak 65:b2d98328fcba 391 void
Helmut Tschemernjak 65:b2d98328fcba 392 Timeout::remove(void)
Helmut Tschemernjak 65:b2d98328fcba 393 {
Helmut Tschemernjak 65:b2d98328fcba 394 noInterrupts();
Helmut Tschemernjak 65:b2d98328fcba 395 for (int i = 0; i < MAX_TIMEOUTS-1; i++) {
Helmut Tschemernjak 65:b2d98328fcba 396 struct TimeoutVector *tvp = &TimeOuts[i];
Helmut Tschemernjak 65:b2d98328fcba 397 if (tvp->timer == this) {
Helmut Tschemernjak 65:b2d98328fcba 398 tvp->timer = NULL;
Helmut Tschemernjak 65:b2d98328fcba 399 tvp->timeout = 0;
Helmut Tschemernjak 65:b2d98328fcba 400 break;
Helmut Tschemernjak 65:b2d98328fcba 401 }
Helmut Tschemernjak 65:b2d98328fcba 402 }
Helmut Tschemernjak 65:b2d98328fcba 403 interrupts();
Helmut Tschemernjak 65:b2d98328fcba 404 }
Helmut Tschemernjak 65:b2d98328fcba 405
Helmut Tschemernjak 65:b2d98328fcba 406
Helmut Tschemernjak 65:b2d98328fcba 407 void
Helmut Tschemernjak 65:b2d98328fcba 408 Timeout::restart(uint32_t usecs)
Helmut Tschemernjak 65:b2d98328fcba 409 {
Helmut Tschemernjak 65:b2d98328fcba 410 uint32_t timeout = ~0;
Helmut Tschemernjak 65:b2d98328fcba 411
Helmut Tschemernjak 65:b2d98328fcba 412 /*
Helmut Tschemernjak 65:b2d98328fcba 413 * find the lowest timeout value which is our the next timeout
Helmut Tschemernjak 65:b2d98328fcba 414 * zero means stop the timer.
Helmut Tschemernjak 65:b2d98328fcba 415 */
Helmut Tschemernjak 65:b2d98328fcba 416 noInterrupts();
Helmut Tschemernjak 65:b2d98328fcba 417 for (int i = 0; i < MAX_TIMEOUTS-1; i++) {
Helmut Tschemernjak 65:b2d98328fcba 418 struct TimeoutVector *tvp = &TimeOuts[i];
Helmut Tschemernjak 65:b2d98328fcba 419 if (tvp->timer && tvp->timeout > 0) {
Helmut Tschemernjak 65:b2d98328fcba 420 if (tvp->timeout < timeout) {
Helmut Tschemernjak 65:b2d98328fcba 421 timeout = tvp->timeout;
Helmut Tschemernjak 65:b2d98328fcba 422 }
Helmut Tschemernjak 65:b2d98328fcba 423 }
Helmut Tschemernjak 65:b2d98328fcba 424 }
Helmut Tschemernjak 65:b2d98328fcba 425 interrupts();
Helmut Tschemernjak 65:b2d98328fcba 426
Helmut Tschemernjak 65:b2d98328fcba 427 if (timeout == (uint32_t)~0) {
Helmut Tschemernjak 65:b2d98328fcba 428 stopTimer();
Helmut Tschemernjak 65:b2d98328fcba 429 return;
Helmut Tschemernjak 65:b2d98328fcba 430 }
Helmut Tschemernjak 65:b2d98328fcba 431 if (!usecs)
Helmut Tschemernjak 65:b2d98328fcba 432 usecs = micros();
Helmut Tschemernjak 65:b2d98328fcba 433
Helmut Tschemernjak 65:b2d98328fcba 434 if (timeout > usecs) {
Helmut Tschemernjak 65:b2d98328fcba 435 startTimer(timeout - usecs);
Helmut Tschemernjak 65:b2d98328fcba 436 return;
Helmut Tschemernjak 65:b2d98328fcba 437 } else {
Helmut Tschemernjak 65:b2d98328fcba 438 startTimer(1); // just one usec to trigger interrrupt
Helmut Tschemernjak 65:b2d98328fcba 439 }
Helmut Tschemernjak 65:b2d98328fcba 440 }
Helmut Tschemernjak 46:e78a1d0391ac 441 #endif // ARDUINO