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Diffstat (limited to 'software/hhd70dongle/hhd70.c')
-rw-r--r-- | software/hhd70dongle/hhd70.c | 92 |
1 files changed, 92 insertions, 0 deletions
diff --git a/software/hhd70dongle/hhd70.c b/software/hhd70dongle/hhd70.c new file mode 100644 index 0000000..0b66e3f --- /dev/null +++ b/software/hhd70dongle/hhd70.c @@ -0,0 +1,92 @@ +/* + * + * 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 "LUFA/Drivers/Peripheral/SPI.h" + +#include "cc1101.h" +#include "hhd70.h" + +#define SPI_DDR DDRB +#define SPI_PORT PORTB +#define SPI_PIN PINB +#define CS DDB0 +#define SCK DDB1 +#define MOSI DDB2 +#define MISO DDB3 +#define GDO2 DDB4 +#define GDO0 DDB5 +#define TE DDB7 + +/* + * internal functions + */ + +void hhd70_spi_cs_enable(void) +{ + SPI_PORT &= ~(1<<CS); +} + +void hhd70_spi_cs_disable(void) +{ + SPI_PORT |= (1<<CS); +} + +uint8_t hhd70_spi_get_miso(void) +{ + return (SPI_PIN & (1<<MISO)); +} + +static cc1101_driver_conf_t cc1101_conf = { + .spi_cs_enable = hhd70_spi_cs_enable, + .spi_cs_disable = hhd70_spi_cs_disable, + .spi_read_miso = hhd70_spi_get_miso, + .spi_write_byte = SPI_SendByte, + .spi_read_byte = SPI_ReceiveByte, + .spi_transfer_byte = SPI_TransferByte, + .freq_corr = CC1101_FREQ_CORR(26000000) +}; + +/* + * EXTERNAL INTERFACE + */ + +void hhd70_init(void) +{ + SPI_Init(SPI_SPEED_FCPU_DIV_4 | SPI_ORDER_MSB_FIRST | SPI_SCK_LEAD_RISING | + SPI_SAMPLE_LEADING | SPI_MODE_MASTER); + + SPI_DDR |= (1<<CS); + SPI_PORT |= (1<<CS); + + cc1101_init(cc1101_conf); +} |