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first draft
Dependencies: LMiC SX1272Libx mbed
Fork of LoRaWAN-lmic-app by
hal.cpp@6:fc465060b63e, 2016-02-23 (annotated)
- Committer:
- tmulrooney
- Date:
- Tue Feb 23 15:42:41 2016 +0000
- Revision:
- 6:fc465060b63e
- Parent:
- 1:60184eda0066
first draft
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
mluis | 1:60184eda0066 | 1 | /******************************************************************************* |
mluis | 1:60184eda0066 | 2 | * Copyright (c) 2014 IBM Corporation. |
mluis | 1:60184eda0066 | 3 | * All rights reserved. This program and the accompanying materials |
mluis | 1:60184eda0066 | 4 | * are made available under the terms of the Eclipse Public License v1.0 |
mluis | 1:60184eda0066 | 5 | * which accompanies this distribution, and is available at |
mluis | 1:60184eda0066 | 6 | * http://www.eclipse.org/legal/epl-v10.html |
mluis | 1:60184eda0066 | 7 | * |
mluis | 1:60184eda0066 | 8 | * Contributors: |
mluis | 1:60184eda0066 | 9 | * IBM Zurich Research Lab - initial API, implementation and documentation |
mluis | 1:60184eda0066 | 10 | * Semtech Apps Team - Modified to support the MBED sx1276 driver |
mluis | 1:60184eda0066 | 11 | * library. |
mluis | 1:60184eda0066 | 12 | * Possibility to use original or Semtech's MBED |
mluis | 1:60184eda0066 | 13 | * radio driver. The selection is done by setting |
mluis | 1:60184eda0066 | 14 | * USE_SMTC_RADIO_DRIVER preprocessing directive |
mluis | 1:60184eda0066 | 15 | * in lmic.h |
mluis | 1:60184eda0066 | 16 | *******************************************************************************/ |
mluis | 1:60184eda0066 | 17 | #include "mbed.h" |
mluis | 1:60184eda0066 | 18 | #include "lmic.h" |
tmulrooney | 6:fc465060b63e | 19 | #include "debug.h" |
mluis | 1:60184eda0066 | 20 | |
mluis | 1:60184eda0066 | 21 | #if !USE_SMTC_RADIO_DRIVER |
mluis | 1:60184eda0066 | 22 | |
mluis | 1:60184eda0066 | 23 | extern void radio_irq_handler( u1_t dio ); |
mluis | 1:60184eda0066 | 24 | |
tmulrooney | 6:fc465060b63e | 25 | static DigitalOut nss( PTD4 ); |
tmulrooney | 6:fc465060b63e | 26 | static SPI spi( PTD6, PTD7, PTD5 ); // ( mosi, miso, sclk ) |
mluis | 1:60184eda0066 | 27 | |
mluis | 1:60184eda0066 | 28 | static DigitalInOut rst( A0 ); |
tmulrooney | 6:fc465060b63e | 29 | static DigitalOut rxtx( PTC6 ); |
mluis | 1:60184eda0066 | 30 | |
tmulrooney | 6:fc465060b63e | 31 | static InterruptIn dio0( PTC2 ); |
tmulrooney | 6:fc465060b63e | 32 | static InterruptIn dio1( PTC4 ); |
tmulrooney | 6:fc465060b63e | 33 | static InterruptIn dio2( PTC3 ); |
mluis | 1:60184eda0066 | 34 | |
mluis | 1:60184eda0066 | 35 | static void dio0Irq( void ) { |
mluis | 1:60184eda0066 | 36 | radio_irq_handler( 0 ); |
mluis | 1:60184eda0066 | 37 | } |
mluis | 1:60184eda0066 | 38 | |
mluis | 1:60184eda0066 | 39 | static void dio1Irq( void ) { |
mluis | 1:60184eda0066 | 40 | radio_irq_handler( 1 ); |
mluis | 1:60184eda0066 | 41 | } |
mluis | 1:60184eda0066 | 42 | |
mluis | 1:60184eda0066 | 43 | static void dio2Irq( void ) { |
mluis | 1:60184eda0066 | 44 | radio_irq_handler( 2 ); |
mluis | 1:60184eda0066 | 45 | } |
mluis | 1:60184eda0066 | 46 | |
mluis | 1:60184eda0066 | 47 | #endif |
mluis | 1:60184eda0066 | 48 | |
mluis | 1:60184eda0066 | 49 | static u1_t irqlevel = 0; |
mluis | 1:60184eda0066 | 50 | static u4_t ticks = 0; |
mluis | 1:60184eda0066 | 51 | |
mluis | 1:60184eda0066 | 52 | static Timer timer; |
mluis | 1:60184eda0066 | 53 | static Ticker ticker; |
mluis | 1:60184eda0066 | 54 | |
tmulrooney | 6:fc465060b63e | 55 | static void reset_timer( void ) |
tmulrooney | 6:fc465060b63e | 56 | { |
tmulrooney | 6:fc465060b63e | 57 | debug("reset_timer enter\r\n"); |
mluis | 1:60184eda0066 | 58 | ticks += timer.read_us( ) >> 6; |
mluis | 1:60184eda0066 | 59 | timer.reset( ); |
mluis | 1:60184eda0066 | 60 | } |
mluis | 1:60184eda0066 | 61 | |
tmulrooney | 6:fc465060b63e | 62 | void hal_init( void ) |
tmulrooney | 6:fc465060b63e | 63 | { |
tmulrooney | 6:fc465060b63e | 64 | debug("hal_init enter\r\n"); |
mluis | 1:60184eda0066 | 65 | __disable_irq( ); |
mluis | 1:60184eda0066 | 66 | irqlevel = 0; |
mluis | 1:60184eda0066 | 67 | |
mluis | 1:60184eda0066 | 68 | #if !USE_SMTC_RADIO_DRIVER |
mluis | 1:60184eda0066 | 69 | // configure input lines |
mluis | 1:60184eda0066 | 70 | dio0.mode( PullDown ); |
mluis | 1:60184eda0066 | 71 | dio0.rise( dio0Irq ); |
mluis | 1:60184eda0066 | 72 | dio0.enable_irq( ); |
mluis | 1:60184eda0066 | 73 | dio1.mode( PullDown ); |
mluis | 1:60184eda0066 | 74 | dio1.rise( dio1Irq ); |
mluis | 1:60184eda0066 | 75 | dio1.enable_irq( ); |
mluis | 1:60184eda0066 | 76 | dio2.mode( PullDown ); |
mluis | 1:60184eda0066 | 77 | dio2.rise( dio2Irq ); |
mluis | 1:60184eda0066 | 78 | dio2.enable_irq( ); |
mluis | 1:60184eda0066 | 79 | // configure reset line |
mluis | 1:60184eda0066 | 80 | rst.input( ); |
mluis | 1:60184eda0066 | 81 | // configure spi |
tmulrooney | 6:fc465060b63e | 82 | // spi.frequency( 8000000 ); |
tmulrooney | 6:fc465060b63e | 83 | spi.frequency( 1000000 ); |
mluis | 1:60184eda0066 | 84 | spi.format( 8, 0 ); |
mluis | 1:60184eda0066 | 85 | nss = 1; |
mluis | 1:60184eda0066 | 86 | #endif |
mluis | 1:60184eda0066 | 87 | // configure timer |
mluis | 1:60184eda0066 | 88 | timer.start( ); |
mluis | 1:60184eda0066 | 89 | ticker.attach_us( reset_timer, 10000000 ); // reset timer every 10sec |
mluis | 1:60184eda0066 | 90 | __enable_irq( ); |
tmulrooney | 6:fc465060b63e | 91 | debug("hal_init exit\r\n"); |
mluis | 1:60184eda0066 | 92 | } |
mluis | 1:60184eda0066 | 93 | |
mluis | 1:60184eda0066 | 94 | #if !USE_SMTC_RADIO_DRIVER |
mluis | 1:60184eda0066 | 95 | |
tmulrooney | 6:fc465060b63e | 96 | void hal_pin_rxtx( u1_t val ) |
tmulrooney | 6:fc465060b63e | 97 | { |
tmulrooney | 6:fc465060b63e | 98 | debug("hal_pin_rxtx enter %d\r\n",val); |
mluis | 1:60184eda0066 | 99 | rxtx = !val; |
mluis | 1:60184eda0066 | 100 | } |
mluis | 1:60184eda0066 | 101 | |
tmulrooney | 6:fc465060b63e | 102 | void hal_pin_nss( u1_t val ) |
tmulrooney | 6:fc465060b63e | 103 | { |
tmulrooney | 6:fc465060b63e | 104 | debug("hal_pin_nss enter %d\r\n",val); |
mluis | 1:60184eda0066 | 105 | nss = val; |
mluis | 1:60184eda0066 | 106 | } |
mluis | 1:60184eda0066 | 107 | |
tmulrooney | 6:fc465060b63e | 108 | void hal_pin_rst( u1_t val ) |
tmulrooney | 6:fc465060b63e | 109 | { |
tmulrooney | 6:fc465060b63e | 110 | debug("hal_pin_rst enter %d\r\n",val); |
mluis | 1:60184eda0066 | 111 | if( val == 0 || val == 1 ) |
mluis | 1:60184eda0066 | 112 | { // drive pin |
mluis | 1:60184eda0066 | 113 | rst.output( ); |
mluis | 1:60184eda0066 | 114 | rst = val; |
mluis | 1:60184eda0066 | 115 | } |
mluis | 1:60184eda0066 | 116 | else |
mluis | 1:60184eda0066 | 117 | { // keep pin floating |
mluis | 1:60184eda0066 | 118 | rst.input( ); |
mluis | 1:60184eda0066 | 119 | } |
mluis | 1:60184eda0066 | 120 | } |
mluis | 1:60184eda0066 | 121 | |
tmulrooney | 6:fc465060b63e | 122 | u1_t hal_spi( u1_t out ) |
tmulrooney | 6:fc465060b63e | 123 | { |
tmulrooney | 6:fc465060b63e | 124 | debug("hal_spi enter\r\n"); |
tmulrooney | 6:fc465060b63e | 125 | return spi.write( out ); |
mluis | 1:60184eda0066 | 126 | } |
mluis | 1:60184eda0066 | 127 | |
mluis | 1:60184eda0066 | 128 | #endif |
mluis | 1:60184eda0066 | 129 | |
tmulrooney | 6:fc465060b63e | 130 | void hal_disableIRQs( void ) |
tmulrooney | 6:fc465060b63e | 131 | { |
tmulrooney | 6:fc465060b63e | 132 | //debug("hal_disableIRQs enter\r\n"); |
tmulrooney | 6:fc465060b63e | 133 | __disable_irq( ); |
mluis | 1:60184eda0066 | 134 | irqlevel++; |
mluis | 1:60184eda0066 | 135 | } |
mluis | 1:60184eda0066 | 136 | |
tmulrooney | 6:fc465060b63e | 137 | void hal_enableIRQs( void ) |
tmulrooney | 6:fc465060b63e | 138 | { |
tmulrooney | 6:fc465060b63e | 139 | //debug("hal_enableIRQs enter\r\n"); |
mluis | 1:60184eda0066 | 140 | if( --irqlevel == 0 ) |
mluis | 1:60184eda0066 | 141 | { |
mluis | 1:60184eda0066 | 142 | __enable_irq( ); |
mluis | 1:60184eda0066 | 143 | } |
mluis | 1:60184eda0066 | 144 | } |
mluis | 1:60184eda0066 | 145 | |
tmulrooney | 6:fc465060b63e | 146 | void hal_sleep( void ) |
tmulrooney | 6:fc465060b63e | 147 | { |
tmulrooney | 6:fc465060b63e | 148 | //debug("hal_sleep enter\r\n"); |
mluis | 1:60184eda0066 | 149 | // NOP |
mluis | 1:60184eda0066 | 150 | } |
mluis | 1:60184eda0066 | 151 | |
tmulrooney | 6:fc465060b63e | 152 | u4_t hal_ticks( void ) |
tmulrooney | 6:fc465060b63e | 153 | { |
mluis | 1:60184eda0066 | 154 | hal_disableIRQs( ); |
mluis | 1:60184eda0066 | 155 | int t = ticks + ( timer.read_us( ) >> 6 ); |
mluis | 1:60184eda0066 | 156 | hal_enableIRQs( ); |
tmulrooney | 6:fc465060b63e | 157 | //debug("hal_ticks exit %d\r\n",t); |
mluis | 1:60184eda0066 | 158 | return t; |
mluis | 1:60184eda0066 | 159 | } |
mluis | 1:60184eda0066 | 160 | |
tmulrooney | 6:fc465060b63e | 161 | static u2_t deltaticks( u4_t time ) |
tmulrooney | 6:fc465060b63e | 162 | { |
tmulrooney | 6:fc465060b63e | 163 | // debug("deltaticks enter\r\n"); |
mluis | 1:60184eda0066 | 164 | u4_t t = hal_ticks( ); |
mluis | 1:60184eda0066 | 165 | s4_t d = time - t; |
mluis | 1:60184eda0066 | 166 | if( d <= 0 ) { |
mluis | 1:60184eda0066 | 167 | return 0; // in the past |
mluis | 1:60184eda0066 | 168 | } |
mluis | 1:60184eda0066 | 169 | if( ( d >> 16 ) != 0 ) { |
mluis | 1:60184eda0066 | 170 | return 0xFFFF; // far ahead |
mluis | 1:60184eda0066 | 171 | } |
mluis | 1:60184eda0066 | 172 | return ( u2_t )d; |
mluis | 1:60184eda0066 | 173 | } |
mluis | 1:60184eda0066 | 174 | |
tmulrooney | 6:fc465060b63e | 175 | void hal_waitUntil( u4_t time ) |
tmulrooney | 6:fc465060b63e | 176 | { |
tmulrooney | 6:fc465060b63e | 177 | debug("hal_waitUntil enter\r\n"); |
mluis | 1:60184eda0066 | 178 | while( deltaticks( time ) != 0 ); // busy wait until timestamp is reached |
mluis | 1:60184eda0066 | 179 | } |
mluis | 1:60184eda0066 | 180 | |
tmulrooney | 6:fc465060b63e | 181 | u1_t hal_checkTimer( u4_t time ) |
tmulrooney | 6:fc465060b63e | 182 | { |
tmulrooney | 6:fc465060b63e | 183 | // debug("hal_checkTimer enter\r\n"); |
mluis | 1:60184eda0066 | 184 | return ( deltaticks( time ) < 2 ); |
mluis | 1:60184eda0066 | 185 | } |
mluis | 1:60184eda0066 | 186 | |
tmulrooney | 6:fc465060b63e | 187 | void hal_failed( void ) |
tmulrooney | 6:fc465060b63e | 188 | { |
tmulrooney | 6:fc465060b63e | 189 | debug("hal_failed enter\r\n"); |
mluis | 1:60184eda0066 | 190 | while( 1 ); |
mluis | 1:60184eda0066 | 191 | } |