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164 lines
5.5 KiB
C++
164 lines
5.5 KiB
C++
/*
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Copyright (c) 2011 Arduino. All right reserved.
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "variant.h"
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/*
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* DUE Board pin | PORT
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* ----------------+--------
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* 0 RX0 | PA8
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* 1 TX0 | PA9
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* 13 TIOB0 | PB27
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*
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* AT24C512BN pin | PORT
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* ----------------+--------
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* SO | PA25
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* SI | PA26
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* SCK | PA27
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* #CS SS3 | PB23
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*
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*
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* LEDs | PORT
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* ----------------+--------
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* "TX" | PA21
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* "RX" | PC30
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* "L" | PB27
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*/
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/*
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* Pins descriptions
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*/
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extern const PinDescription g_APinDescription[]=
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{
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// 0 .. x - Digital pins
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// ----------------------
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// 0/1 - UART (Serial)
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{ PIOA, PIO_PA8A_URXD, ID_PIOA, PIO_PERIPH_A, PIO_DEFAULT, PIN_ATTR_DIGITAL, NO_ADC, NO_ADC, NO_PWM, NO_TC }, // URXD
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{ PIOA, PIO_PA9A_UTXD, ID_PIOA, PIO_PERIPH_A, PIO_DEFAULT, PIN_ATTR_DIGITAL, NO_ADC, NO_ADC, NO_PWM, NO_TC }, // UTXD
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// 2/5 - LEDS
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{ PIOB, PIO_PB13, ID_PIOB, PIO_OUTPUT_1, PIO_DEFAULT, PIN_ATTR_DIGITAL, NO_ADC, NO_ADC, NO_PWM, NO_TC }, // USER_LED1
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{ PIOB, PIO_PB12, ID_PIOB, PIO_OUTPUT_1, PIO_DEFAULT, PIN_ATTR_DIGITAL, NO_ADC, NO_ADC, NO_PWM, NO_TC }, // USER_LED2
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{ PIOA, PIO_PA12, ID_PIOA, PIO_OUTPUT_1, PIO_DEFAULT, PIN_ATTR_DIGITAL, NO_ADC, NO_ADC, NO_PWM, NO_TC }, // USER_LED3
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{ PIOA, PIO_PA13, ID_PIOA, PIO_OUTPUT_0, PIO_DEFAULT, PIN_ATTR_DIGITAL, NO_ADC, NO_ADC, NO_PWM, NO_TC }, // POWER_LED
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// 6/7 - USART0 (Serial2)
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{ PIOA, PIO_PA10A_RXD0, ID_PIOA, PIO_PERIPH_A, PIO_DEFAULT, PIN_ATTR_DIGITAL, NO_ADC, NO_ADC, NO_PWM, NO_TC }, // URXD
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{ PIOA, PIO_PA11A_TXD0, ID_PIOA, PIO_PERIPH_A, PIO_DEFAULT, PIN_ATTR_DIGITAL, NO_ADC, NO_ADC, NO_PWM, NO_TC }, // UTXD
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// 8 - UART (Serial) all pins
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{ PIOA, PIO_PA8A_URXD|PIO_PA9A_UTXD, ID_PIOA, PIO_PERIPH_A, PIO_DEFAULT, (PIN_ATTR_DIGITAL|PIN_ATTR_COMBO), NO_ADC, NO_ADC, NO_PWM, NO_TC },
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// 9 - USART0 (Serial2) all pins
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{ PIOA, PIO_PA11A_TXD0|PIO_PA10A_RXD0, ID_PIOA, PIO_PERIPH_A, PIO_DEFAULT, (PIN_ATTR_DIGITAL|PIN_ATTR_COMBO), NO_ADC, NO_ADC, NO_PWM, NO_TC },
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// 10 - Analog pins
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// ----------------------
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{ PIOA, PIO_PA3, ID_PIOA, PIO_INPUT, PIO_DEFAULT, PIN_ATTR_ANALOG, ADC0, ADC1, NO_PWM, NO_TC }, // AD0
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{ NULL, 0, 0, PIO_NOT_A_PIN, PIO_DEFAULT, PIN_ATTR_DIGITAL, NO_ADC, NO_ADC, NO_PWM, NO_TC } // END
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} ;
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/*
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* UART objects
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*/
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RingBuffer rx_buffer1 ;
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UARTClass Serial1( UART, UART_IRQn, ID_UART, &rx_buffer1 ) ;
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// IT handlers
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void UART_Handler(void)
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{
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Serial1.IrqHandler() ;
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}
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// ----------------------------------------------------------------------------
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/*
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* USART objects
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*/
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RingBuffer rx_buffer2 ;
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RingBuffer rx_buffer3 ;
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USARTClass Serial2( USART0, USART0_IRQn, ID_USART0, &rx_buffer2 ) ;
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// IT handlers
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void USART0_Handler( void )
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{
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Serial2.IrqHandler() ;
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}
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// ----------------------------------------------------------------------------
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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*
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*/
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extern void init( void )
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{
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SystemInit() ;
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// Set Systick to 1ms interval, common to all SAM3 variants
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if ( SysTick_Config( SystemCoreClock / 1000 ) )
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{
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// Capture error
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while ( 1 ) ;
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}
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// Disable watchdog, common to all SAM variants
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WDT_Disable( WDT ) ;
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// Initialize Serial port UART, common to all SAM3 variants
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PIO_Configure( g_APinDescription[PINS_UART].pPort,
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g_APinDescription[PINS_UART].ulPinType,
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g_APinDescription[PINS_UART].ulPin,
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g_APinDescription[PINS_UART].ulPinConfiguration ) ;
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// Initialize Serial ports USART
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PIO_Configure( g_APinDescription[PINS_USART0].pPort,
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g_APinDescription[PINS_USART0].ulPinType,
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g_APinDescription[PINS_USART0].ulPin,
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g_APinDescription[PINS_USART0].ulPinConfiguration ) ;
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// Switch off Power LED
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PIO_Configure( g_APinDescription[PIN_LED_RED].pPort,
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g_APinDescription[PIN_LED_RED].ulPinType,
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g_APinDescription[PIN_LED_RED].ulPin,
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g_APinDescription[PIN_LED_RED].ulPinConfiguration ) ;
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PIO_Clear( g_APinDescription[PIN_LED_RED].pPort, g_APinDescription[PIN_LED_RED].ulPin ) ;
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// Initialize 10bit Analog Controller
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pmc_enable_periph_clk( ID_ADC ) ;
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adc_init( ADC, SystemCoreClock, ADC_FREQ_MAX, ADC_STARTUP_FAST ) ;
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adc_configure_timing(ADC, 0, ADC_SETTLING_TIME_3, 1);
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adc_configure_trigger(ADC, ADC_TRIG_SW, 0); // Disable hardware trigger.
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adc_disable_interrupt( ADC, 0xFFFFFFFF ) ; // Disable all ADC interrupts.
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adc_disable_all_channel( ADC ) ;
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// Initialize analogOutput module
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analogOutputInit();
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}
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#ifdef __cplusplus
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}
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#endif
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