Thiago Lima / SX1276GenericLib

test

Dependents:   Telemetria_RX_SD_GPS_copy Telemetria_RX_SD_GPS Telemetria_TX Telemetria_TX ... more

sx1276/arduino-mbed.cpp@70:1d496aae2819, 2017-07-23 (annotated)

Committer:
Helmut Tschemernjak
Date:
Sun Jul 23 15:44:57 2017 +0200
Revision:
70:1d496aae2819
Parent:
69:d440a5b04708 
Better sleep() support for Arduino D21

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 69:d440a5b04708 182 attachInterrupt(MYdigitalPinToInterrupt(_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 69:d440a5b04708 195 attachInterrupt(MYdigitalPinToInterrupt(_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 } TimeOuts[MAX_TIMEOUTS];
Helmut Tschemernjak 65:b2d98328fcba 209
Helmut Tschemernjak 65:b2d98328fcba 210
Helmut Tschemernjak 65:b2d98328fcba 211 #if defined(__SAMD21G18A__) || defined(__SAMD21J18A__)
Helmut Tschemernjak 65:b2d98328fcba 212 /*
Helmut Tschemernjak 65:b2d98328fcba 213 * __SAMD21J18A__ is the SamD21 Explained Board
Helmut Tschemernjak 65:b2d98328fcba 214 * __SAMD21G18A__ is Genuino Zero-Board (compatible with the LoRa board)
Helmut Tschemernjak 65:b2d98328fcba 215 */
Helmut Tschemernjak 65:b2d98328fcba 216
Helmut Tschemernjak 65:b2d98328fcba 217 /*
Helmut Tschemernjak 67:d3afd803f40d 218 * see tcc.h is automatically included from:
Helmut Tschemernjak 65:b2d98328fcba 219 * Arduino15/packages/arduino/tools/CMSIS-Atmel/1.1.0/CMSIS/
Helmut Tschemernjak 65:b2d98328fcba 220 * Device/ATMEL/samd21/include/component/tcc.h
Helmut Tschemernjak 66:fbb2da34bd9a 221 * See also tcc.c (ASF/mbed, e.g. Tcc_get_count_value)
Helmut Tschemernjak 65:b2d98328fcba 222 */
Helmut Tschemernjak 66:fbb2da34bd9a 223 static void initTimer(Tcc *t);
Helmut Tschemernjak 66:fbb2da34bd9a 224 static uint32_t getTimerCount(Tcc *t);
Helmut Tschemernjak 66:fbb2da34bd9a 225
Helmut Tschemernjak 67:d3afd803f40d 226 /*
Helmut Tschemernjak 67:d3afd803f40d 227 * The Atmel D21 has three TCC timer, other models have more.
Helmut Tschemernjak 67:d3afd803f40d 228 */
Helmut Tschemernjak 66:fbb2da34bd9a 229 static const struct TCC_config {
Helmut Tschemernjak 65:b2d98328fcba 230 Tcc *tcc_ptr;
Helmut Tschemernjak 65:b2d98328fcba 231 IRQn_Type tcc_irq;
Helmut Tschemernjak 65:b2d98328fcba 232 uint8_t nbits;
Helmut Tschemernjak 66:fbb2da34bd9a 233 } TCC_data[] {
Helmut Tschemernjak 65:b2d98328fcba 234 { TCC0, TCC0_IRQn, 24 },
Helmut Tschemernjak 65:b2d98328fcba 235 { TCC1, TCC1_IRQn, 24 },
Helmut Tschemernjak 65:b2d98328fcba 236 { TCC2, TCC2_IRQn, 16 },
Helmut Tschemernjak 66:fbb2da34bd9a 237 { NULL, (IRQn_Type)NULL, 0 }
Helmut Tschemernjak 65:b2d98328fcba 238 };
Helmut Tschemernjak 67:d3afd803f40d 239
Helmut Tschemernjak 67:d3afd803f40d 240 /*
Helmut Tschemernjak 67:d3afd803f40d 241 * We preferably use the TCC timers because it supports 24-bit counters
Helmut Tschemernjak 67:d3afd803f40d 242 * versus TC Timer which supports only 8 or 16 bit counters
Helmut Tschemernjak 67:d3afd803f40d 243 * TCC0/1/2 timer work on the D21 using Arduino.
Helmut Tschemernjak 67:d3afd803f40d 244 */
Helmut Tschemernjak 67:d3afd803f40d 245 #define USE_TCC_TIMEOUT 0 // 0=TCC0, 1=TTC1, 2=TTC2 (see TCC_data)
Helmut Tschemernjak 66:fbb2da34bd9a 246 #define USE_TCC_TICKER 1
Helmut Tschemernjak 66:fbb2da34bd9a 247
Helmut Tschemernjak 67:d3afd803f40d 248
Helmut Tschemernjak 67:d3afd803f40d 249 /*
Helmut Tschemernjak 67:d3afd803f40d 250 * every 21333 ns equals one tick (1/(48000000/1024)) // prescaler 1024, 48 MHz
Helmut Tschemernjak 67:d3afd803f40d 251 * every 61035 ns equals one tick (1/(32768/2)) // prescaler 2, 32 kHz
Helmut Tschemernjak 67:d3afd803f40d 252 * COUNT*DIVIDER*SECS until interrupt
Helmut Tschemernjak 67:d3afd803f40d 253 * CPU 48 MHz = (65536*1024)/1.398636s
Helmut Tschemernjak 67:d3afd803f40d 254 * RTC 32 kHz = (65536*2)/4.0s
Helmut Tschemernjak 67:d3afd803f40d 255 */
Helmut Tschemernjak 67:d3afd803f40d 256 #define NS_PER_CLOCK_CPU 21333 // ns secs per clock
Helmut Tschemernjak 67:d3afd803f40d 257 #define NS_PER_CLOCK_RTC 61035 // ns secs per clock
Helmut Tschemernjak 67:d3afd803f40d 258
Helmut Tschemernjak 67:d3afd803f40d 259 #define NS_PER_CLOCK NS_PER_CLOCK_RTC
Helmut Tschemernjak 66:fbb2da34bd9a 260
Helmut Tschemernjak 66:fbb2da34bd9a 261 /* ----------------- TICKER TIMER CODE ----------------------*/
Helmut Tschemernjak 67:d3afd803f40d 262
Helmut Tschemernjak 67:d3afd803f40d 263 /*
Helmut Tschemernjak 67:d3afd803f40d 264 * The global ns_counter contains the time in ns from the last time
Helmut Tschemernjak 67:d3afd803f40d 265 * the counter has been wrapped. It cannot be used directly because the
Helmut Tschemernjak 67:d3afd803f40d 266 * current counter has to be added fore using it. Use instead
Helmut Tschemernjak 67:d3afd803f40d 267 * ns_getTicker(), us_ ns_getTicker(), ms_getTicker()
Helmut Tschemernjak 67:d3afd803f40d 268 */
Helmut Tschemernjak 67:d3afd803f40d 269
Helmut Tschemernjak 67:d3afd803f40d 270 uint64_t ticker_ns;
Helmut Tschemernjak 66:fbb2da34bd9a 271 static bool initTickerDone = false;
Helmut Tschemernjak 66:fbb2da34bd9a 272
Helmut Tschemernjak 70:1d496aae2819 273 uint32_t s_getTicker(void)
Helmut Tschemernjak 70:1d496aae2819 274 {
Helmut Tschemernjak 70:1d496aae2819 275 long long ns = ns_getTicker();
Helmut Tschemernjak 70:1d496aae2819 276 ns /= (long long)1000000000; // to secs
Helmut Tschemernjak 70:1d496aae2819 277
Helmut Tschemernjak 70:1d496aae2819 278 int secs = ns;
Helmut Tschemernjak 70:1d496aae2819 279 return secs;
Helmut Tschemernjak 70:1d496aae2819 280 }
Helmut Tschemernjak 70:1d496aae2819 281
Helmut Tschemernjak 70:1d496aae2819 282
Helmut Tschemernjak 67:d3afd803f40d 283 uint32_t ms_getTicker(void)
Helmut Tschemernjak 67:d3afd803f40d 284 {
Helmut Tschemernjak 67:d3afd803f40d 285 uint32_t us = us_getTicker();
Helmut Tschemernjak 67:d3afd803f40d 286
Helmut Tschemernjak 67:d3afd803f40d 287 us /= 1000; // to ms
Helmut Tschemernjak 67:d3afd803f40d 288 return us;
Helmut Tschemernjak 67:d3afd803f40d 289 }
Helmut Tschemernjak 67:d3afd803f40d 290
Helmut Tschemernjak 67:d3afd803f40d 291 uint32_t us_getTicker(void)
Helmut Tschemernjak 67:d3afd803f40d 292 {
Helmut Tschemernjak 67:d3afd803f40d 293 long long ns = ns_getTicker();
Helmut Tschemernjak 67:d3afd803f40d 294
Helmut Tschemernjak 67:d3afd803f40d 295 ns /= (long long)1000; // to us
Helmut Tschemernjak 67:d3afd803f40d 296 uint32_t us = ns & 0xffffffff;
Helmut Tschemernjak 67:d3afd803f40d 297
Helmut Tschemernjak 67:d3afd803f40d 298 return us;
Helmut Tschemernjak 67:d3afd803f40d 299 }
Helmut Tschemernjak 67:d3afd803f40d 300
Helmut Tschemernjak 67:d3afd803f40d 301
Helmut Tschemernjak 67:d3afd803f40d 302 uint64_t ns_getTicker(void)
Helmut Tschemernjak 66:fbb2da34bd9a 303 {
Helmut Tschemernjak 66:fbb2da34bd9a 304 Tcc *t = TCC_data[USE_TCC_TICKER].tcc_ptr;
Helmut Tschemernjak 66:fbb2da34bd9a 305 if (!initTickerDone) {
Helmut Tschemernjak 66:fbb2da34bd9a 306 initTimer(t);
Helmut Tschemernjak 66:fbb2da34bd9a 307 initTickerDone = true;
Helmut Tschemernjak 66:fbb2da34bd9a 308
Helmut Tschemernjak 67:d3afd803f40d 309 // set counter top to max 16 bit for testing
Helmut Tschemernjak 67:d3afd803f40d 310 // t->PER.bit.PER = 0xffff;
Helmut Tschemernjak 67:d3afd803f40d 311 // while (t->SYNCBUSY.bit.PER == 1); // wait for sync
Helmut Tschemernjak 66:fbb2da34bd9a 312
Helmut Tschemernjak 66:fbb2da34bd9a 313 t->CTRLA.reg |= TCC_CTRLA_ENABLE ; // Enable TC
Helmut Tschemernjak 66:fbb2da34bd9a 314 while (t->SYNCBUSY.bit.ENABLE == 1); // wait for sync
Helmut Tschemernjak 67:d3afd803f40d 315 }
Helmut Tschemernjak 67:d3afd803f40d 316
Helmut Tschemernjak 67:d3afd803f40d 317 /*
Helmut Tschemernjak 67:d3afd803f40d 318 * if we are called from the interrupt level, the counter contains
Helmut Tschemernjak 67:d3afd803f40d 319 * somehow wrong data, therfore we needs to read it twice.
Helmut Tschemernjak 67:d3afd803f40d 320 * Another option was to add a little wait (loop 500x)
Helmut Tschemernjak 67:d3afd803f40d 321 * in the TCC_TIMEOUT interrupt handler.
Helmut Tschemernjak 67:d3afd803f40d 322 */
Helmut Tschemernjak 67:d3afd803f40d 323 if (SCB->ICSR & SCB_ICSR_VECTACTIVE_Msk) // check if we are in the interrupt
Helmut Tschemernjak 67:d3afd803f40d 324 getTimerCount(t);
Helmut Tschemernjak 66:fbb2da34bd9a 325
Helmut Tschemernjak 67:d3afd803f40d 326 uint64_t counter_us = (uint64_t)NS_PER_CLOCK * (uint64_t)getTimerCount(t);
Helmut Tschemernjak 67:d3afd803f40d 327 uint64_t ns = ticker_ns + counter_us;
Helmut Tschemernjak 67:d3afd803f40d 328
Helmut Tschemernjak 67:d3afd803f40d 329 return ns;
Helmut Tschemernjak 66:fbb2da34bd9a 330 }
Helmut Tschemernjak 65:b2d98328fcba 331
Helmut Tschemernjak 66:fbb2da34bd9a 332 #if USE_TCC_TICKER == 0
Helmut Tschemernjak 66:fbb2da34bd9a 333 void TCC0_Handler()
Helmut Tschemernjak 66:fbb2da34bd9a 334 #elif USE_TCC_TICKER == 1
Helmut Tschemernjak 66:fbb2da34bd9a 335 void TCC1_Handler()
Helmut Tschemernjak 66:fbb2da34bd9a 336 #elif USE_TCC_TICKER == 2
Helmut Tschemernjak 66:fbb2da34bd9a 337 void TCC2_Handler()
Helmut Tschemernjak 66:fbb2da34bd9a 338 #endif
Helmut Tschemernjak 66:fbb2da34bd9a 339 {
Helmut Tschemernjak 66:fbb2da34bd9a 340 Tcc *t = TCC_data[USE_TCC_TICKER].tcc_ptr;
Helmut Tschemernjak 66:fbb2da34bd9a 341 /*
Helmut Tschemernjak 67:d3afd803f40d 342 * Overflow means the timer top exeeded
Helmut Tschemernjak 66:fbb2da34bd9a 343 */
Helmut Tschemernjak 66:fbb2da34bd9a 344 if (t->INTFLAG.bit.OVF == 1) { // A overflow caused the interrupt
Helmut Tschemernjak 66:fbb2da34bd9a 345 t->INTFLAG.bit.OVF = 1; // writing a one clears the flag ovf flag
Helmut Tschemernjak 67:d3afd803f40d 346 // Serial.println("T_OVF");
Helmut Tschemernjak 67:d3afd803f40d 347
Helmut Tschemernjak 67:d3afd803f40d 348 /*
Helmut Tschemernjak 67:d3afd803f40d 349 * reading the count once is needed, otherwise
Helmut Tschemernjak 67:d3afd803f40d 350 * it will not wrap correct.
Helmut Tschemernjak 67:d3afd803f40d 351 */
Helmut Tschemernjak 67:d3afd803f40d 352 getTimerCount(t);
Helmut Tschemernjak 66:fbb2da34bd9a 353
Helmut Tschemernjak 66:fbb2da34bd9a 354 int bits = TCC_data[USE_TCC_TICKER].nbits;
Helmut Tschemernjak 66:fbb2da34bd9a 355 int maxCounts = (uint32_t)(1<<bits);
Helmut Tschemernjak 66:fbb2da34bd9a 356
Helmut Tschemernjak 67:d3afd803f40d 357 ticker_ns += (uint64_t)NS_PER_CLOCK * (uint64_t)maxCounts;
Helmut Tschemernjak 66:fbb2da34bd9a 358 }
Helmut Tschemernjak 66:fbb2da34bd9a 359 if (t->INTFLAG.bit.MC0 == 1) { // A compare to cc0 caused the interrupt
Helmut Tschemernjak 66:fbb2da34bd9a 360 t->INTFLAG.bit.MC0 = 1; // writing a one clears the MCO (match capture) flag
Helmut Tschemernjak 67:d3afd803f40d 361 // Serial.println("T_MC0");
Helmut Tschemernjak 66:fbb2da34bd9a 362 }
Helmut Tschemernjak 66:fbb2da34bd9a 363 }
Helmut Tschemernjak 66:fbb2da34bd9a 364
Helmut Tschemernjak 67:d3afd803f40d 365 /* ----------------- SUPPORT CODE FOR TCC TIMERS----------------------*/
Helmut Tschemernjak 65:b2d98328fcba 366
Helmut Tschemernjak 65:b2d98328fcba 367 static bool initTimerDone = false;
Helmut Tschemernjak 65:b2d98328fcba 368
Helmut Tschemernjak 67:d3afd803f40d 369 static void initTimer(Tcc *t)
Helmut Tschemernjak 67:d3afd803f40d 370 {
Helmut Tschemernjak 65:b2d98328fcba 371
Helmut Tschemernjak 67:d3afd803f40d 372 /*
Helmut Tschemernjak 67:d3afd803f40d 373 * enable clock for TCC, see gclk.h
Helmut Tschemernjak 67:d3afd803f40d 374 * GCLK_CLKCTRL_GEN_GCLK0 for 48 Mhz CPU
Helmut Tschemernjak 67:d3afd803f40d 375 * GCLK_CLKCTRL_GEN_GCLK1 for 32k extern crystal XOSC32K (ifdef CRYSTALLESS)
Helmut Tschemernjak 67:d3afd803f40d 376 * GCLK_CLKCTRL_GEN_GCLK1 for 32k internal OSC32K
Helmut Tschemernjak 67:d3afd803f40d 377 * see Arduino: arduino/hardware/samd/1.6.15/cores/arduino/startup.c
Helmut Tschemernjak 67:d3afd803f40d 378 * Use TCC_CTRLA_PRESCALER_DIV1024 for for 48 Mhz clock
Helmut Tschemernjak 67:d3afd803f40d 379 * Use TCC_CTRLA_PRESCALER_DIV2 for 32k clock
Helmut Tschemernjak 67:d3afd803f40d 380 */
Helmut Tschemernjak 66:fbb2da34bd9a 381 if (t == TCC0 || t == TCC1) {
Helmut Tschemernjak 67:d3afd803f40d 382 REG_GCLK_CLKCTRL = (uint16_t) (GCLK_CLKCTRL_CLKEN | GCLK_CLKCTRL_GEN_GCLK1 | GCLK_CLKCTRL_ID_TCC0_TCC1);
Helmut Tschemernjak 66:fbb2da34bd9a 383 } else if (t == TCC2) {
Helmut Tschemernjak 67:d3afd803f40d 384 REG_GCLK_CLKCTRL = (uint16_t) (GCLK_CLKCTRL_CLKEN | GCLK_CLKCTRL_GEN_GCLK1 | GCLK_CLKCTRL_ID_TCC2_TC3_Val);
Helmut Tschemernjak 46:e78a1d0391ac 385 }
Helmut Tschemernjak 65:b2d98328fcba 386 while (GCLK->STATUS.bit.SYNCBUSY == 1); // wait for sync
Helmut Tschemernjak 65:b2d98328fcba 387
Helmut Tschemernjak 66:fbb2da34bd9a 388 t->CTRLA.reg &= ~TCC_CTRLA_ENABLE; // Disable TCC
Helmut Tschemernjak 66:fbb2da34bd9a 389 while (t->SYNCBUSY.bit.ENABLE == 1); // wait for sync
Helmut Tschemernjak 65:b2d98328fcba 390
Helmut Tschemernjak 67:d3afd803f40d 391 t->CTRLA.reg |= (TCC_CTRLA_PRESCALER_DIV2 | TCC_CTRLA_RUNSTDBY); // Set perscaler
Helmut Tschemernjak 65:b2d98328fcba 392
Helmut Tschemernjak 66:fbb2da34bd9a 393 t->WAVE.reg |= TCC_WAVE_WAVEGEN_NFRQ; // Set wave form configuration
Helmut Tschemernjak 66:fbb2da34bd9a 394 while (t->SYNCBUSY.bit.WAVE == 1); // wait for sync
Helmut Tschemernjak 65:b2d98328fcba 395
Helmut Tschemernjak 67:d3afd803f40d 396 t->PER.bit.PER = 0xffffff; // set counter top to max 24 bit
Helmut Tschemernjak 66:fbb2da34bd9a 397 while (t->SYNCBUSY.bit.PER == 1); // wait for sync
Helmut Tschemernjak 65:b2d98328fcba 398
Helmut Tschemernjak 65:b2d98328fcba 399 // the compare counter TC->CC[0].reg will be set in the startTimer
Helmut Tschemernjak 65:b2d98328fcba 400 // after the timeout calculation is known.
Helmut Tschemernjak 65:b2d98328fcba 401
Helmut Tschemernjak 65:b2d98328fcba 402 // Interrupts
Helmut Tschemernjak 66:fbb2da34bd9a 403 t->INTENSET.reg = 0; // disable all interrupts
Helmut Tschemernjak 66:fbb2da34bd9a 404 t->INTENSET.bit.OVF = 1; // enable overfollow
Helmut Tschemernjak 66:fbb2da34bd9a 405 t->INTENSET.bit.MC0 = 1; // enable compare match to CC0
Helmut Tschemernjak 65:b2d98328fcba 406
Helmut Tschemernjak 66:fbb2da34bd9a 407 const struct TCC_config *cp = &TCC_data[0];
Helmut Tschemernjak 66:fbb2da34bd9a 408 while (cp->tcc_ptr) {
Helmut Tschemernjak 66:fbb2da34bd9a 409 if (cp->tcc_ptr == t) {
Helmut Tschemernjak 66:fbb2da34bd9a 410 NVIC_EnableIRQ(cp->tcc_irq); // Enable InterruptVector
Helmut Tschemernjak 66:fbb2da34bd9a 411 break;
Helmut Tschemernjak 66:fbb2da34bd9a 412 }
Helmut Tschemernjak 66:fbb2da34bd9a 413 cp++;
Helmut Tschemernjak 66:fbb2da34bd9a 414 }
Helmut Tschemernjak 46:e78a1d0391ac 415 }
Helmut Tschemernjak 46:e78a1d0391ac 416
Helmut Tschemernjak 67:d3afd803f40d 417 #if 0
Helmut Tschemernjak 67:d3afd803f40d 418 // Atmel ASF Code
Helmut Tschemernjak 67:d3afd803f40d 419 static uint32_t getTimerCount(Tcc *t)
Helmut Tschemernjak 67:d3afd803f40d 420 {
Helmut Tschemernjak 66:fbb2da34bd9a 421 uint32_t last_cmd;
Helmut Tschemernjak 66:fbb2da34bd9a 422 /* Wait last command done */
Helmut Tschemernjak 66:fbb2da34bd9a 423 do {
Helmut Tschemernjak 66:fbb2da34bd9a 424 while (t->SYNCBUSY.bit.CTRLB); /* Wait for sync */
Helmut Tschemernjak 66:fbb2da34bd9a 425
Helmut Tschemernjak 66:fbb2da34bd9a 426 last_cmd = t->CTRLBSET.reg & TCC_CTRLBSET_CMD_Msk;
Helmut Tschemernjak 66:fbb2da34bd9a 427 if (TCC_CTRLBSET_CMD_NONE == last_cmd) {
Helmut Tschemernjak 66:fbb2da34bd9a 428 /* Issue read command and break */
Helmut Tschemernjak 66:fbb2da34bd9a 429 t->CTRLBSET.bit.CMD = TCC_CTRLBSET_CMD_READSYNC_Val;
Helmut Tschemernjak 66:fbb2da34bd9a 430 break;
Helmut Tschemernjak 66:fbb2da34bd9a 431 } else if (TCC_CTRLBSET_CMD_READSYNC == last_cmd) {
Helmut Tschemernjak 66:fbb2da34bd9a 432 /* Command have been issued */
Helmut Tschemernjak 66:fbb2da34bd9a 433 break;
Helmut Tschemernjak 66:fbb2da34bd9a 434 }
Helmut Tschemernjak 66:fbb2da34bd9a 435 } while (1);
Helmut Tschemernjak 65:b2d98328fcba 436
Helmut Tschemernjak 66:fbb2da34bd9a 437 while (t->SYNCBUSY.bit.COUNT); /* Wait for sync */
Helmut Tschemernjak 66:fbb2da34bd9a 438
Helmut Tschemernjak 66:fbb2da34bd9a 439 return t->COUNT.reg;
Helmut Tschemernjak 46:e78a1d0391ac 440 }
Helmut Tschemernjak 67:d3afd803f40d 441 #endif
Helmut Tschemernjak 67:d3afd803f40d 442
Helmut Tschemernjak 67:d3afd803f40d 443
Helmut Tschemernjak 67:d3afd803f40d 444 static uint32_t getTimerCount(Tcc *t)
Helmut Tschemernjak 67:d3afd803f40d 445 {
Helmut Tschemernjak 67:d3afd803f40d 446
Helmut Tschemernjak 67:d3afd803f40d 447 noInterrupts();
Helmut Tschemernjak 67:d3afd803f40d 448
Helmut Tschemernjak 67:d3afd803f40d 449 while (t->SYNCBUSY.bit.CTRLB); /* Wait for sync */
Helmut Tschemernjak 67:d3afd803f40d 450
Helmut Tschemernjak 67:d3afd803f40d 451 t->CTRLBSET.bit.CMD = TCC_CTRLBSET_CMD_READSYNC_Val; /* Issue read command and break */
Helmut Tschemernjak 67:d3afd803f40d 452
Helmut Tschemernjak 67:d3afd803f40d 453 while (t->SYNCBUSY.bit.COUNT); /* Wait for sync */
Helmut Tschemernjak 67:d3afd803f40d 454
Helmut Tschemernjak 67:d3afd803f40d 455 uint32_t count = t->COUNT.reg;
Helmut Tschemernjak 67:d3afd803f40d 456
Helmut Tschemernjak 67:d3afd803f40d 457 interrupts();
Helmut Tschemernjak 67:d3afd803f40d 458
Helmut Tschemernjak 67:d3afd803f40d 459 return count;
Helmut Tschemernjak 67:d3afd803f40d 460 }
Helmut Tschemernjak 67:d3afd803f40d 461
Helmut Tschemernjak 46:e78a1d0391ac 462
Helmut Tschemernjak 66:fbb2da34bd9a 463 static void stopTimer(Tcc *t)
Helmut Tschemernjak 46:e78a1d0391ac 464 {
Helmut Tschemernjak 66:fbb2da34bd9a 465 t->CTRLA.reg &= ~TCC_CTRLA_ENABLE; // Disable TC
Helmut Tschemernjak 66:fbb2da34bd9a 466 while (t->SYNCBUSY.bit.ENABLE == 1); // wait for sync
Helmut Tschemernjak 66:fbb2da34bd9a 467 }
Helmut Tschemernjak 66:fbb2da34bd9a 468
Helmut Tschemernjak 67:d3afd803f40d 469
Helmut Tschemernjak 67:d3afd803f40d 470 /* ----------------- TIMEOUT TIMER CODE ----------------------*/
Helmut Tschemernjak 67:d3afd803f40d 471
Helmut Tschemernjak 67:d3afd803f40d 472 static void startTimer(Tcc *t, uint64_t delay_ns)
Helmut Tschemernjak 66:fbb2da34bd9a 473 {
Helmut Tschemernjak 67:d3afd803f40d 474 if (!initTimerDone) {
Helmut Tschemernjak 66:fbb2da34bd9a 475 initTimer(t); // initial setup with stopped timer
Helmut Tschemernjak 67:d3afd803f40d 476 initTimerDone = true;
Helmut Tschemernjak 67:d3afd803f40d 477 }
Helmut Tschemernjak 65:b2d98328fcba 478
Helmut Tschemernjak 66:fbb2da34bd9a 479 stopTimer(t); // avoid timer interrupts while calculating
Helmut Tschemernjak 46:e78a1d0391ac 480
Helmut Tschemernjak 65:b2d98328fcba 481 /*
Helmut Tschemernjak 65:b2d98328fcba 482 * every 21333 ns equals one tick (1/(48000000/1024))
Helmut Tschemernjak 65:b2d98328fcba 483 * COUNT*DIVIDER*SECS until interrupt
Helmut Tschemernjak 65:b2d98328fcba 484 * 48 Mhz = (65536*1024)/1.398636s
Helmut Tschemernjak 65:b2d98328fcba 485 */
Helmut Tschemernjak 67:d3afd803f40d 486 uint64_t nclocks = (uint64_t)delay_ns;
Helmut Tschemernjak 67:d3afd803f40d 487 nclocks /= (uint64_t)NS_PER_CLOCK;
Helmut Tschemernjak 65:b2d98328fcba 488 int nCounts = nclocks;
Helmut Tschemernjak 65:b2d98328fcba 489
Helmut Tschemernjak 66:fbb2da34bd9a 490 int bits = TCC_data[USE_TCC_TIMEOUT].nbits;
Helmut Tschemernjak 65:b2d98328fcba 491 int maxCounts = (uint32_t)(1<<bits)-1;
Helmut Tschemernjak 46:e78a1d0391ac 492
Helmut Tschemernjak 65:b2d98328fcba 493 if (nCounts > maxCounts) // if count exceeds timer capacity
Helmut Tschemernjak 65:b2d98328fcba 494 nCounts = maxCounts; // set the largest posible count.
Helmut Tschemernjak 66:fbb2da34bd9a 495 if (nCounts <= 0)
Helmut Tschemernjak 65:b2d98328fcba 496 nCounts = 1;
Helmut Tschemernjak 66:fbb2da34bd9a 497 t->CC[0].bit.CC = nCounts;
Helmut Tschemernjak 66:fbb2da34bd9a 498 while (t->SYNCBUSY.bit.CC0 == 1); // wait for sync
Helmut Tschemernjak 46:e78a1d0391ac 499
Helmut Tschemernjak 66:fbb2da34bd9a 500 t->CTRLA.reg |= TCC_CTRLA_ENABLE ; // Enable TC
Helmut Tschemernjak 66:fbb2da34bd9a 501 while (t->SYNCBUSY.bit.ENABLE == 1); // wait for sync
Helmut Tschemernjak 67:d3afd803f40d 502 #if 0
Helmut Tschemernjak 67:d3afd803f40d 503 Serial.print(ms_getTicker(), DEC);
Helmut Tschemernjak 65:b2d98328fcba 504 Serial.print(" startTimer: nCounts=");
Helmut Tschemernjak 65:b2d98328fcba 505 Serial.println(nCounts, DEC);
Helmut Tschemernjak 65:b2d98328fcba 506 #endif
Helmut Tschemernjak 46:e78a1d0391ac 507 }
Helmut Tschemernjak 46:e78a1d0391ac 508
Helmut Tschemernjak 46:e78a1d0391ac 509
Helmut Tschemernjak 66:fbb2da34bd9a 510 #if USE_TCC_TIMEOUT == 0
Helmut Tschemernjak 65:b2d98328fcba 511 void TCC0_Handler()
Helmut Tschemernjak 66:fbb2da34bd9a 512 #elif USE_TCC_TIMEOUT == 1
Helmut Tschemernjak 65:b2d98328fcba 513 void TCC1_Handler()
Helmut Tschemernjak 66:fbb2da34bd9a 514 #elif USE_TCC_TIMEOUT == 2
Helmut Tschemernjak 65:b2d98328fcba 515 void TCC2_Handler()
Helmut Tschemernjak 65:b2d98328fcba 516 #endif
Helmut Tschemernjak 65:b2d98328fcba 517 {
Helmut Tschemernjak 66:fbb2da34bd9a 518 Tcc *t = TCC_data[USE_TCC_TIMEOUT].tcc_ptr;
Helmut Tschemernjak 67:d3afd803f40d 519 uint64_t nsecs = ns_getTicker();
Helmut Tschemernjak 65:b2d98328fcba 520
Helmut Tschemernjak 65:b2d98328fcba 521 /*
Helmut Tschemernjak 65:b2d98328fcba 522 * Overflow means the max timer exeeded, we need restart the timer
Helmut Tschemernjak 65:b2d98328fcba 523 * Interrupts and
Helmut Tschemernjak 65:b2d98328fcba 524 */
Helmut Tschemernjak 66:fbb2da34bd9a 525 if (t->INTFLAG.bit.OVF == 1) { // A overflow caused the interrupt
Helmut Tschemernjak 66:fbb2da34bd9a 526 t->INTFLAG.bit.OVF = 1; // writing a one clears the flag ovf flag
Helmut Tschemernjak 65:b2d98328fcba 527 }
Helmut Tschemernjak 65:b2d98328fcba 528
Helmut Tschemernjak 66:fbb2da34bd9a 529 if (t->INTFLAG.bit.MC0 == 1) { // A compare to cc0 caused the interrupt
Helmut Tschemernjak 65:b2d98328fcba 530 //Serial.print("MC0\r\n");
Helmut Tschemernjak 66:fbb2da34bd9a 531 t->INTFLAG.bit.MC0 = 1; // writing a one clears the MCO (match capture) flag
Helmut Tschemernjak 65:b2d98328fcba 532 }
Helmut Tschemernjak 65:b2d98328fcba 533
Helmut Tschemernjak 66:fbb2da34bd9a 534 t->CTRLA.reg &= ~TCC_CTRLA_ENABLE; // Disable TC
Helmut Tschemernjak 66:fbb2da34bd9a 535 while (t->SYNCBUSY.bit.ENABLE == 1); // wait for sync
Helmut Tschemernjak 65:b2d98328fcba 536
Helmut Tschemernjak 65:b2d98328fcba 537 for (int i = 0; i < MAX_TIMEOUTS-1; i++) {
Helmut Tschemernjak 65:b2d98328fcba 538 struct TimeoutVector *tvp = &TimeOuts[i];
Helmut Tschemernjak 67:d3afd803f40d 539 if (tvp->timer && nsecs >= tvp->timer->_timeout) {
Helmut Tschemernjak 65:b2d98328fcba 540 Timeout *saveTimer = tvp->timer;
Helmut Tschemernjak 65:b2d98328fcba 541 tvp->timer = NULL;
Helmut Tschemernjak 65:b2d98328fcba 542 Timeout::_irq_handler(saveTimer);
Helmut Tschemernjak 65:b2d98328fcba 543 }
Helmut Tschemernjak 65:b2d98328fcba 544 }
Helmut Tschemernjak 65:b2d98328fcba 545 /*
Helmut Tschemernjak 65:b2d98328fcba 546 * we need to restart the timer for remaining interrupts
Helmut Tschemernjak 67:d3afd803f40d 547 * Another reason is that we stopped this counter, in case there are
Helmut Tschemernjak 67:d3afd803f40d 548 * remaining counts, we need to re-schedule the counter.
Helmut Tschemernjak 65:b2d98328fcba 549 */
Helmut Tschemernjak 67:d3afd803f40d 550 Timeout::restart();
Helmut Tschemernjak 65:b2d98328fcba 551 }
Helmut Tschemernjak 65:b2d98328fcba 552
Helmut Tschemernjak 67:d3afd803f40d 553
Helmut Tschemernjak 65:b2d98328fcba 554 #endif // D21 TCC Timer
Helmut Tschemernjak 65:b2d98328fcba 555
Helmut Tschemernjak 65:b2d98328fcba 556 void
Helmut Tschemernjak 65:b2d98328fcba 557 Timeout::insert(void)
Helmut Tschemernjak 65:b2d98328fcba 558 {
Helmut Tschemernjak 65:b2d98328fcba 559 noInterrupts();
Helmut Tschemernjak 65:b2d98328fcba 560 for (int i = 0; i < MAX_TIMEOUTS-1; i++) {
Helmut Tschemernjak 65:b2d98328fcba 561 struct TimeoutVector *tvp = &TimeOuts[i];
Helmut Tschemernjak 65:b2d98328fcba 562 if (tvp->timer == NULL) {
Helmut Tschemernjak 65:b2d98328fcba 563 tvp->timer = this;
Helmut Tschemernjak 65:b2d98328fcba 564 break;
Helmut Tschemernjak 65:b2d98328fcba 565 }
Helmut Tschemernjak 65:b2d98328fcba 566 }
Helmut Tschemernjak 65:b2d98328fcba 567 interrupts();
Helmut Tschemernjak 65:b2d98328fcba 568 }
Helmut Tschemernjak 65:b2d98328fcba 569
Helmut Tschemernjak 65:b2d98328fcba 570 void
Helmut Tschemernjak 65:b2d98328fcba 571 Timeout::remove(void)
Helmut Tschemernjak 65:b2d98328fcba 572 {
Helmut Tschemernjak 65:b2d98328fcba 573 noInterrupts();
Helmut Tschemernjak 65:b2d98328fcba 574 for (int i = 0; i < MAX_TIMEOUTS-1; i++) {
Helmut Tschemernjak 65:b2d98328fcba 575 struct TimeoutVector *tvp = &TimeOuts[i];
Helmut Tschemernjak 65:b2d98328fcba 576 if (tvp->timer == this) {
Helmut Tschemernjak 65:b2d98328fcba 577 tvp->timer = NULL;
Helmut Tschemernjak 65:b2d98328fcba 578 break;
Helmut Tschemernjak 65:b2d98328fcba 579 }
Helmut Tschemernjak 65:b2d98328fcba 580 }
Helmut Tschemernjak 65:b2d98328fcba 581 interrupts();
Helmut Tschemernjak 65:b2d98328fcba 582 }
Helmut Tschemernjak 65:b2d98328fcba 583
Helmut Tschemernjak 65:b2d98328fcba 584
Helmut Tschemernjak 65:b2d98328fcba 585 void
Helmut Tschemernjak 67:d3afd803f40d 586 Timeout::restart()
Helmut Tschemernjak 65:b2d98328fcba 587 {
Helmut Tschemernjak 67:d3afd803f40d 588 Tcc *t = TCC_data[USE_TCC_TIMEOUT].tcc_ptr;
Helmut Tschemernjak 67:d3afd803f40d 589 uint64_t timeout = ~0;
Helmut Tschemernjak 65:b2d98328fcba 590
Helmut Tschemernjak 65:b2d98328fcba 591 /*
Helmut Tschemernjak 65:b2d98328fcba 592 * find the lowest timeout value which is our the next timeout
Helmut Tschemernjak 65:b2d98328fcba 593 * zero means stop the timer.
Helmut Tschemernjak 65:b2d98328fcba 594 */
Helmut Tschemernjak 65:b2d98328fcba 595 noInterrupts();
Helmut Tschemernjak 65:b2d98328fcba 596 for (int i = 0; i < MAX_TIMEOUTS-1; i++) {
Helmut Tschemernjak 65:b2d98328fcba 597 struct TimeoutVector *tvp = &TimeOuts[i];
Helmut Tschemernjak 67:d3afd803f40d 598 if (tvp->timer) {
Helmut Tschemernjak 67:d3afd803f40d 599 if (tvp->timer->_timeout < timeout) {
Helmut Tschemernjak 67:d3afd803f40d 600 timeout = tvp->timer->_timeout;
Helmut Tschemernjak 65:b2d98328fcba 601 }
Helmut Tschemernjak 65:b2d98328fcba 602 }
Helmut Tschemernjak 65:b2d98328fcba 603 }
Helmut Tschemernjak 65:b2d98328fcba 604 interrupts();
Helmut Tschemernjak 65:b2d98328fcba 605
Helmut Tschemernjak 67:d3afd803f40d 606 if (timeout == (uint64_t)~0) {
Helmut Tschemernjak 67:d3afd803f40d 607 stopTimer(t);
Helmut Tschemernjak 65:b2d98328fcba 608 return;
Helmut Tschemernjak 65:b2d98328fcba 609 }
Helmut Tschemernjak 67:d3afd803f40d 610
Helmut Tschemernjak 67:d3afd803f40d 611 uint64_t nsecs = ns_getTicker();
Helmut Tschemernjak 65:b2d98328fcba 612
Helmut Tschemernjak 67:d3afd803f40d 613 if (timeout > nsecs) {
Helmut Tschemernjak 67:d3afd803f40d 614 startTimer(t, (uint64_t)timeout - (uint64_t)nsecs);
Helmut Tschemernjak 65:b2d98328fcba 615 return;
Helmut Tschemernjak 65:b2d98328fcba 616 } else {
Helmut Tschemernjak 67:d3afd803f40d 617 startTimer(t, (uint64_t)1); // just one nsec to trigger interrrupt
Helmut Tschemernjak 65:b2d98328fcba 618 }
Helmut Tschemernjak 65:b2d98328fcba 619 }
Helmut Tschemernjak 67:d3afd803f40d 620
Helmut Tschemernjak 67:d3afd803f40d 621 /* ----------------- D21 sleep() and deepsleep() code ----------------------*/
Helmut Tschemernjak 67:d3afd803f40d 622
Helmut Tschemernjak 67:d3afd803f40d 623 void sleep(void)
Helmut Tschemernjak 67:d3afd803f40d 624 {
Helmut Tschemernjak 67:d3afd803f40d 625 #if 1 // (SAMD20 || SAMD21)
Helmut Tschemernjak 67:d3afd803f40d 626 /* Errata: Make sure that the Flash does not power all the way down
Helmut Tschemernjak 67:d3afd803f40d 627 * when in sleep mode. */
Helmut Tschemernjak 67:d3afd803f40d 628 NVMCTRL->CTRLB.bit.SLEEPPRM = NVMCTRL_CTRLB_SLEEPPRM_DISABLED_Val;
Helmut Tschemernjak 67:d3afd803f40d 629 #endif
Helmut Tschemernjak 70:1d496aae2819 630 uint32_t saved_ms = ms_getTicker();
Helmut Tschemernjak 70:1d496aae2819 631 SysTick->CTRL &= ~SysTick_CTRL_ENABLE_Msk; // disbale SysTick
Helmut Tschemernjak 70:1d496aae2819 632
Helmut Tschemernjak 67:d3afd803f40d 633 SCB->SCR &= ~SCB_SCR_SLEEPDEEP_Msk; // clear deep sleep
Helmut Tschemernjak 67:d3afd803f40d 634 PM->SLEEP.reg = 2; // SYSTEM_SLEEPMODE_IDLE_2 IDLE 2 sleep mode.
Helmut Tschemernjak 67:d3afd803f40d 635
Helmut Tschemernjak 67:d3afd803f40d 636 __DSB(); // ensures the completion of memory accesses
Helmut Tschemernjak 67:d3afd803f40d 637 __WFI(); // wait for interrupt
Helmut Tschemernjak 70:1d496aae2819 638
Helmut Tschemernjak 70:1d496aae2819 639 int count = ms_getTicker() - saved_ms;
Helmut Tschemernjak 70:1d496aae2819 640 if (count > 0) { // update the Arduino Systicks
Helmut Tschemernjak 70:1d496aae2819 641 for (int i = 0; i < count; i++) {
Helmut Tschemernjak 70:1d496aae2819 642 SysTick_Handler();
Helmut Tschemernjak 70:1d496aae2819 643 }
Helmut Tschemernjak 70:1d496aae2819 644 }
Helmut Tschemernjak 70:1d496aae2819 645 SysTick->CTRL |= SysTick_CTRL_ENABLE_Msk; // enable SysTick
Helmut Tschemernjak 67:d3afd803f40d 646 }
Helmut Tschemernjak 67:d3afd803f40d 647
Helmut Tschemernjak 67:d3afd803f40d 648 void deepsleep(void)
Helmut Tschemernjak 67:d3afd803f40d 649 {
Helmut Tschemernjak 67:d3afd803f40d 650 #if 1 // (SAMD20 || SAMD21)
Helmut Tschemernjak 67:d3afd803f40d 651 /* Errata: Make sure that the Flash does not power all the way down
Helmut Tschemernjak 67:d3afd803f40d 652 * when in sleep mode. */
Helmut Tschemernjak 67:d3afd803f40d 653 NVMCTRL->CTRLB.bit.SLEEPPRM = NVMCTRL_CTRLB_SLEEPPRM_DISABLED_Val;
Helmut Tschemernjak 67:d3afd803f40d 654 #endif
Helmut Tschemernjak 67:d3afd803f40d 655
Helmut Tschemernjak 70:1d496aae2819 656 SysTick->CTRL &= ~SysTick_CTRL_ENABLE_Msk; // disbale SysTick
Helmut Tschemernjak 70:1d496aae2819 657
Helmut Tschemernjak 67:d3afd803f40d 658 SCB->SCR |= SCB_SCR_SLEEPDEEP_Msk; // standby mode
Helmut Tschemernjak 70:1d496aae2819 659
Helmut Tschemernjak 67:d3afd803f40d 660 __DSB(); // ensures the completion of memory accesses
Helmut Tschemernjak 67:d3afd803f40d 661 __WFI(); // wait for interrupt
Helmut Tschemernjak 70:1d496aae2819 662
Helmut Tschemernjak 70:1d496aae2819 663 SysTick->CTRL |= SysTick_CTRL_ENABLE_Msk; // enable SysTick
Helmut Tschemernjak 67:d3afd803f40d 664 }
Helmut Tschemernjak 67:d3afd803f40d 665
Helmut Tschemernjak 67:d3afd803f40d 666
Helmut Tschemernjak 46:e78a1d0391ac 667 #endif // ARDUINO