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3da3280930
The Doxygen documentation blocks have not been correctly aligned. This commit fixes this.
116 lines
2.8 KiB
C
116 lines
2.8 KiB
C
/*
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* Copyright (C) 2018 Otto-von-Guericke-Universität Magdeburg
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*
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* This file is subject to the terms and conditions of the GNU Lesser
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* General Public License v2.1. See the file LICENSE in the top level
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* directory for more details.
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*/
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/**
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* @ingroup drivers_cc110x
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* @{
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*
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* @file
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* @brief Functions to communicate with the CC1100/CC1101 transceiver
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*
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* @author Marian Buschsieweke <marian.buschsieweke@ovgu.de>
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* @}
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*/
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#include <errno.h>
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#include "periph/gpio.h"
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#include "periph/spi.h"
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#include "xtimer.h"
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#include "cc110x.h"
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#include "cc110x_constants.h"
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int cc110x_power_on(cc110x_t *dev)
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{
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gpio_t cs = dev->params.cs;
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if (gpio_init(cs, GPIO_OUT)) {
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return -EIO;
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}
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gpio_clear(cs);
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xtimer_usleep(150);
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gpio_set(cs);
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spi_init_cs(dev->params.spi, dev->params.cs);
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return 0;
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}
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uint8_t cc110x_read(cc110x_t *dev, uint8_t addr, uint8_t *dest)
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{
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uint8_t status;
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addr |= CC110X_SINGLE_BYTE_READ;
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spi_transfer_bytes(dev->params.spi, dev->params.cs, true,
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&addr, &status, 1);
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spi_transfer_bytes(dev->params.spi, dev->params.cs, false, NULL, dest, 1);
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return status;
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}
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uint8_t cc110x_read_reliable(cc110x_t *dev, uint8_t addr, uint8_t *dest)
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{
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uint8_t status, tmp;
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do {
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cc110x_read(dev, addr, &tmp);
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status = cc110x_read(dev, addr, dest);
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} while (*dest != tmp);
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return status;
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}
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uint8_t cc110x_write(cc110x_t *dev, uint8_t addr, uint8_t data)
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{
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uint8_t status;
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addr |= CC110X_SINGLE_BYTE_WRITE;
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spi_transfer_bytes(dev->params.spi, dev->params.cs, true,
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&addr, &status, 1);
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spi_transfer_bytes(dev->params.spi, dev->params.cs, false, &data, NULL, 1);
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return status;
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}
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uint8_t cc110x_burst_read(cc110x_t *dev, uint8_t addr, void *dest, size_t len)
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{
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uint8_t status;
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addr |= CC110X_BURST_READ;
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spi_transfer_bytes(dev->params.spi, dev->params.cs, true,
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&addr, &status, 1);
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spi_transfer_bytes(dev->params.spi, dev->params.cs, false, NULL, dest, len);
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return status;
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}
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uint8_t cc110x_burst_write(cc110x_t *dev, uint8_t addr,
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const void *src, size_t len)
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{
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uint8_t status;
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addr |= CC110X_BURST_WRITE;
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spi_transfer_bytes(dev->params.spi, dev->params.cs, true,
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&addr, &status, 1);
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spi_transfer_bytes(dev->params.spi, dev->params.cs, false, src, NULL, len);
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return status;
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}
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uint8_t cc110x_cmd(cc110x_t *dev, uint8_t cmd_strobe)
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{
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uint8_t status;
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spi_transfer_bytes(dev->params.spi, dev->params.cs, false,
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&cmd_strobe, &status, 1);
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return status;
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}
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uint8_t cc110x_status(cc110x_t *dev)
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{
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uint8_t status;
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do {
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status = cc110x_cmd(dev, CC110X_STROBE_STATUS);
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} while (status != cc110x_cmd(dev, CC110X_STROBE_STATUS));
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return status;
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}
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