/* gpio-defines.h: PPM firmware general purpose input/output header. * Copyright (C) 2014 Bradley Worley * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * 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. * * You should have received a copy of the GNU General Public License * along with this program. If not, see . */ /* ensure proper inclusion. */ #ifndef __PPM_GPIO_DEFINES_H__ #define __PPM_GPIO_DEFINES_H__ /* * * * GPIO HARDWARE CONNECTIONS * * * */ /* define connections for: light-emitting diodes. */ #define GPIO_LED_DDR DDRC #define GPIO_LED_PORT PORTC #define GPIO_LED_PINA PORTC4 #define GPIO_LED_PINB PORTC5 #define GPIO_LED_PINC PORTC6 /* define connections for: constant current sink. */ #define GPIO_CCSEN_DDR DDRC #define GPIO_CCSEN_PORT PORTC #define GPIO_CCSEN_PIN PORTC2 /* define connections for: polarization relay. */ #define GPIO_RELAY_DDR DDRD #define GPIO_RELAY_PORT PORTD #define GPIO_RELAY_PIN PORTD3 /* define connections for: analog signal chain power. */ #define GPIO_LDOEN_DDR DDRB #define GPIO_LDOEN_PORT PORTB #define GPIO_LDOEN_PIN PORTB6 /* define connections for: hardware spi analog-to-digital converter. */ #define GPIO_HWSPI_DDR DDRB #define GPIO_HWSPI_SS DDB0 #define GPIO_HWSPI_SCK DDB1 #define GPIO_HWSPI_MOSI DDB2 /* GPIO_HWSPI_MISO need not be defined: master mode forces it as input. */ /* define connections for: analog-to-digital converter chip-select. */ #define GPIO_ADCSEL_DDR DDRD #define GPIO_ADCSEL_PORT PORTD #define GPIO_ADCSEL_PIN PORTD6 /* * * * GPIO SOFTWARE FUNCTIONS: LEDs * * * */ /* gpio_led_init: initialize the state of the led outputs. */ #define gpio_led_init() \ GPIO_LED_DDR |= ((1 << GPIO_LED_PINA) | \ (1 << GPIO_LED_PINB) | \ (1 << GPIO_LED_PINC)); \ gpio_led_comm_off (); \ gpio_led_adc_off (); \ gpio_led_ccs_off (); /* gpio_led_comm_on: turn on the first (communication) led output. */ #define gpio_led_comm_on() \ GPIO_LED_PORT |= (1 << GPIO_LED_PINA); /* gpio_led_comm_off: turn off the first (communication) led output. */ #define gpio_led_comm_off() \ GPIO_LED_PORT &= ~(1 << GPIO_LED_PINA); /* gpio_led_adc_on: turn on the second (adc) led output. */ #define gpio_led_adc_on() \ GPIO_LED_PORT |= (1 << GPIO_LED_PINB); /* gpio_led_adc_off: turn off the second (adc) led output. */ #define gpio_led_adc_off() \ GPIO_LED_PORT &= ~(1 << GPIO_LED_PINB); /* gpio_led_ccs_on: turn on the third (ccs) led output. */ #define gpio_led_ccs_on() \ GPIO_LED_PORT |= (1 << GPIO_LED_PINC); /* gpio_led_ccs_off: turn off the third (ccs) led output. */ #define gpio_led_ccs_off() \ GPIO_LED_PORT &= ~(1 << GPIO_LED_PINC); /* * * * GPIO SOFTWARE FUNCTIONS: CCS * * * */ /* gpio_ccs_init: initializes the state of the current source. */ #define gpio_ccs_init() \ GPIO_CCSEN_DDR |= (1 << GPIO_CCSEN_PIN); \ gpio_ccs_disable (); /* gpio_ccs_enable: disable the polarization current source. this function * ties the CCS_EN pin high to signal the MOSFET gate driver to drive the * FET gate high. */ #define gpio_ccs_enable() \ GPIO_CCSEN_PORT |= (1 << GPIO_CCSEN_PIN); /* gpio_ccs_disable: enable the polarization current source. this function * ties the CCS_EN pin low to signal the MOSFET gate driver to drive the * FET gate low. */ #define gpio_ccs_disable() \ GPIO_CCSEN_PORT &= ~(1 << GPIO_CCSEN_PIN); /* * * * GPIO SOFTWARE FUNCTIONS: RELAY * * * */ /* gpio_relay_init: initializes the state of the POL/ACQ relay. */ #define gpio_relay_init() \ GPIO_RELAY_DDR |= (1 << GPIO_RELAY_PIN); \ gpio_relay_acq (); /* gpio_relay_pol: engages the POL/ACQ relay into the POL mode by sending * the RELAY_EN pin high. this software requires that the default relay * position is ACQ mode. */ #define gpio_relay_pol() \ GPIO_RELAY_PORT |= (1 << GPIO_RELAY_PIN); /* gpio_relay_acq: disengages the POL/ACQ relay into the ACQ mode by sending * the RELAY_EN pin low. this software requires that the default relay * position is ACQ mode. */ #define gpio_relay_acq() \ GPIO_RELAY_PORT &= ~(1 << GPIO_RELAY_PIN); /* * * * GPIO SOFTWARE FUNCTIONS: LDO * * * */ /* gpio_ldo_init: initializes the state of the ASC power supply. */ #define gpio_ldo_init() \ GPIO_LDOEN_DDR |= (1 << GPIO_LDOEN_PIN); \ gpio_ldo_disable (); /* gpio_ldo_enable: enables the analog signal chain power supply by * sending the LDO_EN pin high. */ #define gpio_ldo_enable() \ GPIO_LDOEN_PORT |= (1 << GPIO_LDOEN_PIN); /* gpio_ldo_disable: disables the analog signal chain power supply by * sending the LDO_EN pin low. */ #define gpio_ldo_disable() \ GPIO_LDOEN_PORT &= ~(1 << GPIO_LDOEN_PIN); /* * * * GPIO SOFTWARE FUNCTIONS: HW SPI * * * */ /* gpio_hwspi_init: initializes the hardware spi gpio ports. */ #define gpio_hwspi_init() \ GPIO_HWSPI_DDR |= ((1 << GPIO_HWSPI_SS) | \ (1 << GPIO_HWSPI_SCK) | \ (1 << GPIO_HWSPI_MOSI)); /* * * * GPIO SOFTWARE FUNCTIONS: ADC /CS * * * */ /* gpio_adc_init: initialize the ADC /CS line state. */ #define gpio_adc_init() \ gpio_hwspi_init (); \ GPIO_ADCSEL_DDR |= (1 << GPIO_ADCSEL_PIN); \ gpio_adc_deselect (); /* gpio_adc_select: sends the ADC /CS line low to begin a conversion. */ #define gpio_adc_select() \ GPIO_ADCSEL_PORT &= ~(1 << GPIO_ADCSEL_PIN); /* gpio_adc_deselect: sends the ADC /CS line low to end a conversion. */ #define gpio_adc_deselect() \ GPIO_ADCSEL_PORT |= (1 << GPIO_ADCSEL_PIN); #endif /* __PPM_GPIO_DEFINES_H__ */