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Diffstat (limited to 'software/hhd70dongle/hhd70.c')
| -rw-r--r-- | software/hhd70dongle/hhd70.c | 184 |
1 files changed, 0 insertions, 184 deletions
diff --git a/software/hhd70dongle/hhd70.c b/software/hhd70dongle/hhd70.c deleted file mode 100644 index 1e3b5c7..0000000 --- a/software/hhd70dongle/hhd70.c +++ /dev/null @@ -1,184 +0,0 @@ -/* - * - * mur.sat - * - * Somewhen in the year 20xx, mur.at will have a nano satellite launched - * into a low earth orbit (310 km above the surface of our planet). The - * satellite itself is a TubeSat personal satellite kit, developed and - * launched by interorbital systems. mur.sat is a joint venture of mur.at, - * ESC im Labor and realraum. - * - * Please visit the project hompage at sat.mur.at for further information. - * - * - * Copyright (C) 2012 Bernhard Tittelbach <xro@realraum.at> - * 2015 Christian Pointner <equinox@mur.at> - * - * This file is part of mur.sat. - * - * mur.sat 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 - * any later version. - * - * mur.sat 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 mur.sat. If not, see <http://www.gnu.org/licenses/>. - * - */ -#include "avr/io.h" - -#include "hhd70.h" - -#define BIAS_VAL OCR1BL - -static void hhd70_bias_init(void) -{ - DDRB |= (1<<PB6); - TCCR1B = 0; - TCNT1 = 0; - OCR1B = 0; - TCCR1A = (1<<COM1B1) | (1<<WGM10); - TCCR1B = (1<<WGM12); -} - -static inline void hhd70_bias_on(void) -{ - TCCR1B = (TCCR1B & 0xF8) | (1<<CS10); -} - -static inline void hhd70_bias_off(void) -{ - TCCR1B = (TCCR1B & 0xF8); - TCNT1 = 0; -} - -void hhd70_init(void) -{ - //configure Direction of SS / PB0 , MOSI and SCLK as Output to drive CS of CC1101 - SPI_DDR = (1<<MOSI)|(1<<SCK)|(1<<CS)|(1<<TE)|(1<<BIAS_PWM); - SPI_PORT = (1<<CS) | (1<<GDO2) | (1<<BIAS_PWM); - SPCR = (1<<SPE)|(1<<MSTR); // | (0<<DORD) //select MSB first: DORD == 0 - // SPSR = (0<<SPI2X) // f_osc/4 - // SPSR = (1<<SPI2X) // f_osc/2 - // SPSR = (1<<SPI2X); (4MHz vs. 8MHz) - hhd70_bias_init(); -} - -void hhd70_config_GDO0_OOK_output(bool output_mode) -{ - hhd70_set_OOK_GDO0_low(); - if (output_mode) - SPI_DDR |= (1 << GDO0); - else - SPI_DDR &= ~(1 << GDO0); -} - -void hhd70_set_OOK_GDO0_high(void) -{ - SPI_PORT |= (1 << GDO0); -} - -void hhd70_set_OOK_GDO0_low(void) -{ - //pull low - SPI_PORT &= ~(1<<GDO0); -} - -void hhd70_set_OOK_GDO0_toggle(void) -{ - SPI_PORT ^= (1 << GDO0); -} - -void hhd70_spi_cs_enable(void) -{ - //pull low - SPI_PORT &= ~(1<<CS); -} - -void hhd70_spi_cs_disable(void) -{ - //pull high - SPI_PORT |= (1<<CS); -} - -#include "util.h" - -void hhd70_c1101_wait_chip_rdy(void) -{ - //c1101 will set MISO to low if ready - while (SPI_PINB_REG & (1<<MISO)); - //~ unsigned int c; - //~ for (c=0; c < 0xFFFFFFFF && (SPI_PINB_REG & (1<<MISO)); c++); - //~ uint8_t debug_buff[6]; - //~ usb_rawhid_send((uint8_t*)"spi waited for:",255); - //~ debug_sprint_int16hex(debug_buff, c); - //~ usb_rawhid_send(debug_buff,255); -} - -void hhd70_spi_write_byte(char byte) -{ - SPDR = byte; //Load byte to Data register - while(!(SPSR & (1<<SPIF))); // Wait for transmission complete -} - -char hhd70_spi_exchange_byte(char byte) -{ - hhd70_spi_write_byte(byte); - return SPDR; -} - -char hhd70_spi_read_byte(void) -{ - //transmit something so SCLK runs for 8 bits, so that slave can transfer 1 byte - return hhd70_spi_exchange_byte(0); -} - -void hhd70_palna_txmode(void) -{ - SPI_PORT |= (1<<TE); - hhd70_bias_on(); -} - -void hhd70_palna_rxmode(void) -{ - SPI_PORT &= ~(1<<TE); - hhd70_bias_off(); -} - -void hhd70_palna_off(void) -{ - SPI_PORT |= (1<<TE); - hhd70_bias_off(); -} - -int8_t hhd70_rx_data_available(void) -{ - //check if GDO2 pin has been pulled low by c1101 - return (SPI_PINB_REG & (1 << GDO2)) == 0; -} - -void hhd70_bias_set(uint8_t val) -{ - BIAS_VAL = val; -} - -uint8_t hhd70_bias_get(void) -{ - return BIAS_VAL; -} - -void hhd70_bias_inc(void) -{ - BIAS_VAL = (BIAS_VAL < 253) ? BIAS_VAL + 2 : 255; -} - -void hhd70_bias_dec(void) -{ - BIAS_VAL = (BIAS_VAL > 2) ? BIAS_VAL - 2 : 0; -} - |