us915 ch 9 20dbm
Dependents: DISCO-L072CZ-LRWAN1_LoRa_PingPong
Fork of SX1276GenericLib by
sx1276/arduino-mbed.cpp
- Committer:
- Helmut Tschemernjak
- Date:
- 2017-07-11
- Revision:
- 65:b2d98328fcba
- Parent:
- sx1276/sx1276-arduino-hal.cpp@ 61:08b50780eb91
- Child:
- 66:fbb2da34bd9a
File content as of revision 65:b2d98328fcba:
/* * The file is Licensed under the Apache License, Version 2.0 * (c) 2017 Helmut Tschemernjak * 30826 Garbsen (Hannover) Germany */ #ifdef ARDUINO using namespace std; #include "arduino-mbed.h" static void pinInt00(void); static void pinInt01(void); static void pinInt02(void); static void pinInt03(void); static void pinInt04(void); static void pinInt05(void); static void pinInt06(void); static void pinInt07(void); static void pinInt08(void); static void pinInt09(void); static void pinInt10(void); static void pinInt11(void); static void pinInt12(void); static void pinInt13(void); static void pinInt14(void); static void pinInt15(void); static void pinInt16(void); static void pinInt17(void); static void pinInt18(void); static void pinInt19(void); static void pinInt20(void); static void pinInt21(void); static void pinInt22(void); static void pinInt23(void); static void pinInt24(void); static void pinInt25(void); static void pinInt26(void); static void pinInt27(void); static void pinInt28(void); static void pinInt29(void); static void pinInt30(void); static void pinInt31(void); static void pinInt32(void); static void pinInt33(void); static void pinInt34(void); static void pinInt35(void); static void pinInt36(void); static void pinInt37(void); static void pinInt38(void); static void pinInt39(void); static void pinInt40(void); static void pinInt41(void); static void pinInt42(void); static void pinInt43(void); static void pinInt44(void); static void pinInt45(void); static void pinInt46(void); static void pinInt47(void); #define MAX_MCU_PINS 48 class InterruptIn; struct intPtrTable { void (*func)(void); InterruptIn *context; } intPtrTable[MAX_MCU_PINS] = { { pinInt00, NULL }, { pinInt01, NULL }, { pinInt02, NULL }, { pinInt03, NULL }, { pinInt04, NULL }, { pinInt05, NULL }, { pinInt06, NULL }, { pinInt07, NULL }, { pinInt08, NULL }, { pinInt09, NULL }, { pinInt10, NULL }, { pinInt11, NULL }, { pinInt12, NULL }, { pinInt13, NULL }, { pinInt14, NULL }, { pinInt15, NULL }, { pinInt16, NULL }, { pinInt17, NULL }, { pinInt18, NULL }, { pinInt19, NULL }, { pinInt20, NULL }, { pinInt21, NULL }, { pinInt22, NULL }, { pinInt23, NULL }, { pinInt24, NULL }, { pinInt25, NULL }, { pinInt26, NULL }, { pinInt27, NULL }, { pinInt28, NULL }, { pinInt29, NULL }, { pinInt30, NULL }, { pinInt31, NULL }, { pinInt32, NULL }, { pinInt33, NULL }, { pinInt34, NULL }, { pinInt35, NULL }, { pinInt36, NULL }, { pinInt37, NULL }, { pinInt38, NULL }, { pinInt39, NULL }, { pinInt40, NULL }, { pinInt41, NULL }, { pinInt42, NULL }, { pinInt43, NULL }, { pinInt44, NULL }, { pinInt45, NULL }, { pinInt46, NULL }, { pinInt47, NULL } }; // our max MCUs pins static void pinInt00(void) { InterruptIn::_irq_handler(intPtrTable[0].context); } static void pinInt01(void) { InterruptIn::_irq_handler(intPtrTable[1].context); } static void pinInt02(void) { InterruptIn::_irq_handler(intPtrTable[2].context); } static void pinInt03(void) { InterruptIn::_irq_handler(intPtrTable[3].context); } static void pinInt04(void) { InterruptIn::_irq_handler(intPtrTable[4].context); } static void pinInt05(void) { InterruptIn::_irq_handler(intPtrTable[5].context); } static void pinInt06(void) { InterruptIn::_irq_handler(intPtrTable[6].context); } static void pinInt07(void) { InterruptIn::_irq_handler(intPtrTable[7].context); } static void pinInt08(void) { InterruptIn::_irq_handler(intPtrTable[8].context); } static void pinInt09(void) { InterruptIn::_irq_handler(intPtrTable[9].context); } static void pinInt10(void) { InterruptIn::_irq_handler(intPtrTable[10].context); } static void pinInt11(void) { InterruptIn::_irq_handler(intPtrTable[11].context); } static void pinInt12(void) { InterruptIn::_irq_handler(intPtrTable[12].context); } static void pinInt13(void) { InterruptIn::_irq_handler(intPtrTable[13].context); } static void pinInt14(void) { InterruptIn::_irq_handler(intPtrTable[14].context); } static void pinInt15(void) { InterruptIn::_irq_handler(intPtrTable[15].context); } static void pinInt16(void) { InterruptIn::_irq_handler(intPtrTable[16].context); } static void pinInt17(void) { InterruptIn::_irq_handler(intPtrTable[17].context); } static void pinInt18(void) { InterruptIn::_irq_handler(intPtrTable[18].context); } static void pinInt19(void) { InterruptIn::_irq_handler(intPtrTable[19].context); } static void pinInt20(void) { InterruptIn::_irq_handler(intPtrTable[20].context); } static void pinInt21(void) { InterruptIn::_irq_handler(intPtrTable[21].context); } static void pinInt22(void) { InterruptIn::_irq_handler(intPtrTable[22].context); } static void pinInt23(void) { InterruptIn::_irq_handler(intPtrTable[23].context); } static void pinInt24(void) { InterruptIn::_irq_handler(intPtrTable[24].context); } static void pinInt25(void) { InterruptIn::_irq_handler(intPtrTable[25].context); } static void pinInt26(void) { InterruptIn::_irq_handler(intPtrTable[26].context); } static void pinInt27(void) { InterruptIn::_irq_handler(intPtrTable[27].context); } static void pinInt28(void) { InterruptIn::_irq_handler(intPtrTable[28].context); } static void pinInt29(void) { InterruptIn::_irq_handler(intPtrTable[29].context); } static void pinInt30(void) { InterruptIn::_irq_handler(intPtrTable[30].context); } static void pinInt31(void) { InterruptIn::_irq_handler(intPtrTable[31].context); } static void pinInt32(void) { InterruptIn::_irq_handler(intPtrTable[32].context); } static void pinInt33(void) { InterruptIn::_irq_handler(intPtrTable[33].context); } static void pinInt34(void) { InterruptIn::_irq_handler(intPtrTable[34].context); } static void pinInt35(void) { InterruptIn::_irq_handler(intPtrTable[35].context); } static void pinInt36(void) { InterruptIn::_irq_handler(intPtrTable[36].context); } static void pinInt37(void) { InterruptIn::_irq_handler(intPtrTable[37].context); } static void pinInt38(void) { InterruptIn::_irq_handler(intPtrTable[38].context); } static void pinInt39(void) { InterruptIn::_irq_handler(intPtrTable[39].context); } static void pinInt40(void) { InterruptIn::_irq_handler(intPtrTable[40].context); } static void pinInt41(void) { InterruptIn::_irq_handler(intPtrTable[41].context); } static void pinInt42(void) { InterruptIn::_irq_handler(intPtrTable[42].context); } static void pinInt43(void) { InterruptIn::_irq_handler(intPtrTable[43].context); } static void pinInt44(void) { InterruptIn::_irq_handler(intPtrTable[44].context); } static void pinInt45(void) { InterruptIn::_irq_handler(intPtrTable[45].context); } static void pinInt46(void) { InterruptIn::_irq_handler(intPtrTable[46].context); } static void pinInt47(void) { InterruptIn::_irq_handler(intPtrTable[47].context); } void InterruptIn::rise(Callback<void()> func) { if (_gpioPin >= MAX_MCU_PINS-1) return; if (func) { _func = func; intPtrTable[_gpioPin].context = this; attachInterrupt(digitalPinToInterrupt(_gpioPin), intPtrTable[_gpioPin].func, RISING); } else { _func = InterruptIn::donothing; intPtrTable[_gpioPin].context = NULL; detachInterrupt(_gpioPin); } }; void InterruptIn::fall(Callback<void()> func) { if (func) { _func = func; intPtrTable[_gpioPin].context = this; attachInterrupt(digitalPinToInterrupt(_gpioPin), intPtrTable[_gpioPin].func, FALLING); } else { _func = InterruptIn::donothing; intPtrTable[_gpioPin].context = NULL; detachInterrupt(_gpioPin); } } #define MAX_TIMEOUTS 10 class Timeout; struct TimeoutVector { Timeout *timer; volatile uint32_t timeout; // us } TimeOuts[MAX_TIMEOUTS]; #if defined(__SAMD21G18A__) || defined(__SAMD21J18A__) /* * __SAMD21J18A__ is the SamD21 Explained Board * __SAMD21G18A__ is Genuino Zero-Board (compatible with the LoRa board) */ /* * see tcc.h included from * Arduino15/packages/arduino/tools/CMSIS-Atmel/1.1.0/CMSIS/ * Device/ATMEL/samd21/include/component/tcc.h */ static const struct TCC_CONFIG { Tcc *tcc_ptr; IRQn_Type tcc_irq; uint8_t nbits; } TCC_CONFIG[] { { TCC0, TCC0_IRQn, 24 }, { TCC1, TCC1_IRQn, 24 }, { TCC2, TCC2_IRQn, 16 }, }; #define USE_TCC 0 // TCC0, TTC1, TTC2 are working using the Arduino D21 static bool initTimerDone = false; static void initTimer() { Tcc *TC = TCC_CONFIG[USE_TCC].tcc_ptr; // Enable clock for TC, see gclk.h if (TC == TCC0 || TC == TCC1) { REG_GCLK_CLKCTRL = (uint16_t) (GCLK_CLKCTRL_CLKEN | GCLK_CLKCTRL_GEN_GCLK0 | GCLK_CLKCTRL_ID_TCC0_TCC1); } else if (TC == TCC2) { REG_GCLK_CLKCTRL = (uint16_t) (GCLK_CLKCTRL_CLKEN | GCLK_CLKCTRL_GEN_GCLK0 | GCLK_CLKCTRL_ID_TCC2_TC3_Val); } while (GCLK->STATUS.bit.SYNCBUSY == 1); // wait for sync TC->CTRLA.reg &= ~TCC_CTRLA_ENABLE; // Disable TC while (TC->SYNCBUSY.bit.ENABLE == 1); // wait for sync TC->CTRLA.reg |= (TCC_CTRLA_PRESCALER_DIV1024 | TCC_CTRLA_RUNSTDBY); // Set perscaler TC->WAVE.reg |= TCC_WAVE_WAVEGEN_NFRQ; // Set wave form configuration while (TC->SYNCBUSY.bit.WAVE == 1); // wait for sync TC->PER.bit.PER = 0xFFFFFF; // set counter top to max 24 bit while (TC->SYNCBUSY.bit.PER == 1); // wait for sync // the compare counter TC->CC[0].reg will be set in the startTimer // after the timeout calculation is known. // Interrupts TC->INTENSET.reg = 0; // disable all interrupts TC->INTENSET.bit.OVF = 1; // enable overfollow TC->INTENSET.bit.MC0 = 1; // enable compare match to CC0 NVIC_EnableIRQ( TCC_CONFIG[USE_TCC].tcc_irq); // Enable InterruptVector initTimerDone = true; } static void stopTimer(void) { Tcc *TC = TCC_CONFIG[USE_TCC].tcc_ptr; TC->CTRLA.reg &= ~TCC_CTRLA_ENABLE; // Disable TC while (TC->SYNCBUSY.bit.ENABLE == 1); // wait for sync } static void startTimer(uint32_t delay_us) { Tcc *TC = TCC_CONFIG[USE_TCC].tcc_ptr; if (!initTimerDone) initTimer(); // initial setup with stopped timer stopTimer(); // avoid timer interrupts while calculating /* * every 21333 ns equals one tick (1/(48000000/1024)) * COUNT*DIVIDER*SECS until interrupt * 48 Mhz = (65536*1024)/1.398636s */ long long nclocks = delay_us * 1000; // ns; nclocks = nclocks / 21333; int nCounts = nclocks; int bits = TCC_CONFIG[USE_TCC].nbits; int maxCounts = (uint32_t)(1<<bits)-1; if (nCounts > maxCounts) // if count exceeds timer capacity nCounts = maxCounts; // set the largest posible count. if (nCounts == 0) nCounts = 1; TC->CC[0].bit.CC = nCounts; while (TC->SYNCBUSY.bit.CC0 == 1); // wait for sync TC->CTRLA.reg |= TCC_CTRLA_ENABLE ; // Enable TC while (TC->SYNCBUSY.bit.ENABLE == 1); // wait for sync #if 1 Serial.print(millis(), DEC); Serial.print(" startTimer: nCounts="); Serial.println(nCounts, DEC); #endif } #if USE_TCC == 0 void TCC0_Handler() #elif USE_TCC == 1 void TCC1_Handler() #elif USE_TCC == 2 void TCC2_Handler() #endif { static uint32_t last_usecs = 0; Tcc *TC = TCC_CONFIG[USE_TCC].tcc_ptr; uint32_t usecs = micros(); uint32_t u_offset = 0; if (last_usecs && last_usecs < usecs) { /* * Problem is that the micros sometimes gives smaller values * compared to previuos micros. As a workaround we all 1ms. */ u_offset = 1000; } last_usecs = usecs; /* * Overflow means the max timer exeeded, we need restart the timer * Interrupts and */ if (TC->INTFLAG.bit.OVF == 1) { // A overflow caused the interrupt Serial.print("OVF\r\n"); TC->INTFLAG.bit.OVF = 1; // writing a one clears the flag ovf flag } if (TC->INTFLAG.bit.MC0 == 1) { // A compare to cc0 caused the interrupt //Serial.print("MC0\r\n"); TC->INTFLAG.bit.MC0 = 1; // writing a one clears the MCO (match capture) flag } TC->CTRLA.reg &= ~TCC_CTRLA_ENABLE; // Disable TC while (TC->SYNCBUSY.bit.ENABLE == 1); // wait for sync for (int i = 0; i < MAX_TIMEOUTS-1; i++) { struct TimeoutVector *tvp = &TimeOuts[i]; if (tvp->timer && tvp->timeout && usecs + u_offset >= tvp->timeout) { Timeout *saveTimer = tvp->timer; tvp->timer = NULL; tvp->timeout = 0; Timeout::_irq_handler(saveTimer); } } /* * we need to restart the timer for remaining interrupts * we provide the interrupt entry time in usecs which means * we don't count the irq_hander duration or debug prints */ Timeout::restart(usecs); } #endif // D21 TCC Timer void Timeout::insert(void) { noInterrupts(); for (int i = 0; i < MAX_TIMEOUTS-1; i++) { struct TimeoutVector *tvp = &TimeOuts[i]; if (tvp->timer == NULL) { tvp->timeout = _timeout; tvp->timer = this; break; } } interrupts(); } void Timeout::remove(void) { noInterrupts(); for (int i = 0; i < MAX_TIMEOUTS-1; i++) { struct TimeoutVector *tvp = &TimeOuts[i]; if (tvp->timer == this) { tvp->timer = NULL; tvp->timeout = 0; break; } } interrupts(); } void Timeout::restart(uint32_t usecs) { uint32_t timeout = ~0; /* * find the lowest timeout value which is our the next timeout * zero means stop the timer. */ noInterrupts(); for (int i = 0; i < MAX_TIMEOUTS-1; i++) { struct TimeoutVector *tvp = &TimeOuts[i]; if (tvp->timer && tvp->timeout > 0) { if (tvp->timeout < timeout) { timeout = tvp->timeout; } } } interrupts(); if (timeout == (uint32_t)~0) { stopTimer(); return; } if (!usecs) usecs = micros(); if (timeout > usecs) { startTimer(timeout - usecs); return; } else { startTimer(1); // just one usec to trigger interrrupt } } #endif // ARDUINO