Files
edgetx-gx12/radio/src/targets/mega2560/board_mega2560.cpp
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2015-01-10 20:42:32 +01:00

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/*
* Authors (alphabetical order)
* - Aguerre Franck
* - Andre Bernet <bernet.andre@gmail.com>
* - Andreas Weitl
* - Bertrand Songis <bsongis@gmail.com>
* - Bryan J. Rentoul (Gruvin) <gruvin@gmail.com>
* - Cameron Weeks <th9xer@gmail.com>
* - Erez Raviv
* - Gabriel Birkus
* - Jean-Pierre Parisy
* - Karl Szmutny
* - Michael Blandford
* - Michal Hlavinka
* - Pat Mackenzie
* - Philip Moss
* - Rob Thomson
* - Romolo Manfredini <romolo.manfredini@gmail.com>
* - Thomas Husterer
*
* opentx is based on code named
* gruvin9x by Bryan J. Rentoul: http://code.google.com/p/gruvin9x/,
* er9x by Erez Raviv: http://code.google.com/p/er9x/,
* and the original (and ongoing) project by
* Thomas Husterer, th9x: http://code.google.com/p/th9x/
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
*/
#include "../../opentx.h"
#ifndef SIMU
inline void boardInit()
{
// Set up I/O port data directions and initial states (unused pin setting : input, pull-up on)
DDRA = 0b11111111; PORTA = 0b00000000; // LCD data
DDRB = 0b01110111; PORTB = 0b00101111; // 7:PPM_IN 6:PPM_OUT, 5:SimCTRL, 4:Buzzer, SDCARD[3:MISO 2:MOSI 1:SCK 0:CS]
DDRC = 0b11111100; PORTC = 0b00000011; // 7-3:LCD, 2:BackLight, 1:ID2_SW, 0:ID1_SW
DDRD = 0b00000000; PORTD = 0b11111100; // 7:AilDR_SW, 6:N/A, 5:N/A, 4:N/A, 3:RENC2_B, 2:RENC2_A, 1:I2C_SDA, 0:I2C_SCL
DDRE = 0b00000010; PORTE = 0b11111100; // 7:N/A, 6:N/A, 5:RENC1_B, 4:RENC1_A, 3:N/A, 2:N/A, 1:TELEM_TX, 0:TELEM_RX
DDRF = 0b00000000; PORTF = 0b11111111; // 7-0:Trim switch inputs
DDRG = 0b00000000; PORTG = 0b11111111; // 7:N/A, 6:N/A, 5:N/A, 4:N/A, 3:N/A, 2:TCut_SW, 1:Gear_SW, 0: RudDr_SW
DDRH = 0b00011000; PORTH = 0b11110110; // 7:N/A, 6:RFPw, 5:JackPres, 4:HoldPw, 3:Speaker, 2:N/A, 1:N/A, 0:Haptic
DDRJ = 0b00000000; PORTJ = 0b11111111; // 7:N/A, 6:N/A, 5:N/A, 4:N/A, 3:N/A, 2:N/A, 1:RENC2_push, 0:RENC1_push
DDRK = 0b00000000; PORTK = 0b00000000; // Analogic input (no pull-ups)
DDRL = 0b00000000; PORTL = 0b11111111; // 7:TRN_SW 6:EleDR_SW, 5:ESC, 4:MENU 3:Keyb_Left, 2:Keyb_Right, 1:Keyb_Up, 0:Keyb_Down
ADMUX=ADC_VREF_TYPE;
ADCSRA=0x85; // ADC enabled, pre-scaler division=32 (no interrupt, no auto-triggering)
ADCSRB=(1<<MUX5);
/**** Set up timer/counter 0 ****/
// TCNT0 10ms = 16MHz/1024/156(.25) periodic timer (100ms interval)
// cycles at 9.984ms but includes 1:4 duty cycle correction to /157 to average at 10.0ms
TCCR2B = (0b111 << CS20); // Norm mode, clk/1024 (differs from ATmega64 chip)
OCR2A = 156;
TIMSK2 |= (1<<OCIE2A) | (1<<TOIE2); // Enable Output-Compare and Overflow interrrupts
// Set up Phase correct Waveform Gen. mode, at clk/64 = 250,000 counts/second
// (Higher speed allows for finer control of frequencies in the audio range.)
// Used for audio tone generation
TCCR0B = (1<<WGM02) | (0b011 << CS00);
TCCR0A = (0b01<<WGM00);
#if defined (VOICE)
// SOMO set-up
OCR4A = 0x1F4; //2ms
TCCR4B = (1 << WGM42) | (0b011 << CS40); // CTC OCR1A, 16MHz / 64 (4us ticks)
TIMSK4 |= (1<<OCIE4A); // Start the interrupt so the unit reset can occur
#endif
/* Rotary encoder interrupt set-up */
EIMSK = 0; // disable ALL external interrupts.
// encoder 1
EICRB = (1<<ISC50) | (1<<ISC40); // 01 = interrupt on any edge
EIFR = (3<<INTF4); // clear the int. flag in case it got set when changing modes
// encoder 2
EICRA = (1<<ISC30) | (1<<ISC20);
EIFR = (3<<INTF2);
EIMSK = (3<<INT4) | (3<<INT2); // enable the two rot. enc. ext. int. pairs.
}
#endif // !SIMU
uint8_t pwrCheck()
{
#if !defined(SIMU)
if ((~PINH & 0b00100000) && (~PINH & 0b01000000))
return e_power_off;
#endif
return e_power_on;
}
void pwrOff()
{
PORTH = 0b11101111; // PortH-4 set to 0
}
FORCEINLINE uint8_t keyDown()
{
return ((~PINL) & 0x3F) || ROTENC_DOWN();
}
bool switchState(EnumKeys enuk)
{
uint8_t result = 0 ;
if (enuk < (int)DIM(keys))
return keys[enuk].state() ? 1 : 0;
switch(enuk){
case SW_ELE:
result = !(PINL & (1<<INP_L_ElevDR));
break;
case SW_AIL:
result = !(PIND & (1<<INP_D_AileDR));
break;
case SW_RUD:
result = !(PING & (1<<INP_G_RuddDR));
break;
// INP_C_ID1 INP_C_ID2
// ID0 0 1
// ID1 1 1
// ID2 1 0
case SW_ID0:
result = !(PINC & (1<<INP_C_ID1));
break;
case SW_ID1:
result = (PINC & (1<<INP_C_ID1))&& (PINC & (1<<INP_C_ID2));
break;
case SW_ID2:
result = !(PINC & (1<<INP_C_ID2));
break;
#if 0
case SW_ID3:
result = (calibratedStick[POT1+EXTRA_3POS-1] < 0);
break;
case SW_ID4:
result = (calibratedStick[POT1+EXTRA_3POS-1] == 0);
break;
case SW_ID5:
result = (calibratedStick[POT1+EXTRA_3POS-1] > 0);
break;
#endif
case SW_GEA:
result = !(PING & (1<<INP_G_Gear));
break;
case SW_THR:
result = !(PING & (1<<INP_G_ThrCt));
break;
case SW_TRN:
result = !(PINL & (1<<INP_L_Trainer));
break;
default:
break;
}
return result;
}
// Trim switches
static const pm_uchar crossTrim[] PROGMEM ={
1<<INP_F_TRM_LH_DWN,
1<<INP_F_TRM_LH_UP,
1<<INP_F_TRM_LV_DWN,
1<<INP_F_TRM_LV_UP,
1<<INP_F_TRM_RV_DWN,
1<<INP_F_TRM_RV_UP,
1<<INP_F_TRM_RH_DWN,
1<<INP_F_TRM_RH_UP
};
uint8_t trimDown(uint8_t idx)
{
uint8_t in = ~PINF; //was PIND
return (in & pgm_read_byte(crossTrim+idx));
}
FORCEINLINE void readKeysAndTrims()
{
uint8_t enuk = KEY_MENU;
keys[BTN_REa].input(~PINJ & 0b00000001);
keys[BTN_REb].input(~PINJ & 0b00000010);
uint8_t tin = ~PINL;
uint8_t in;
in = (tin & 0x0f) << 3;
in |= (tin & 0x30) >> 3;
for (int i=1; i<7; i++) {
//INP_B_KEY_MEN 1 .. INP_B_KEY_LFT 6
keys[enuk].input(in & (1<<i));
++enuk;
}
// Trims
in = ~PINF;
for (int i=0; i<8; i++) {
// INP_D_TRM_RH_UP 0 .. INP_D_TRM_LH_UP 7
keys[enuk].input(in & pgm_read_byte(crossTrim+i));
++enuk;
}
}
// Rotary encoders increment/decrement (0 = rotary 1, 1 = rotary 2)
ISR(INT4_vect) // Arduino2560 IO02 (portE pin4)
{
uint8_t input = (PINE & 0x30);
if (input == 0 || input == 0x30) incRotaryEncoder(0, -1);
}
ISR(INT5_vect) // Arduino2560 IO03 (portE pin5)
{
uint8_t input = (PINE & 0x30);
if (input == 0 || input == 0x30) incRotaryEncoder(0, +1);
}
ISR(INT2_vect) // Arduino2560 IO19 (portD pin2)
{
uint8_t input = (PIND & 0x0C);
if (input == 0 || input == 0x0C) incRotaryEncoder(1, -1);
}
ISR(INT3_vect) // Arduino2560 IO18 (portD pin3)
{
uint8_t input = (PIND & 0x0C);
if (input == 0 || input == 0x0C) incRotaryEncoder(1, +1);
}