78 lines
3.4 KiB
C
78 lines
3.4 KiB
C
/*
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* Copyright (c) 2012, STMicroelectronics.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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*
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*/
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/*---------------------------------------------------------------------------*/
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#include "stm32l1xx.h"
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#include "spirit1-arch.h"
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#include "spirit1.h"
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#include "st-lib.h"
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/*---------------------------------------------------------------------------*/
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extern void spirit1_interrupt_callback(void);
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st_lib_spirit_bool spiritdk_timer_expired = S_FALSE;
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/*---------------------------------------------------------------------------*/
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/* use the SPI-port to acquire the status bytes from the radio. */
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#define CS_TO_SCLK_DELAY 0x0100
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/*---------------------------------------------------------------------------*/
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extern st_lib_spi_handle_typedef st_lib_p_spi_handle;
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/*---------------------------------------------------------------------------*/
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uint16_t
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spirit1_arch_refresh_status(void)
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{
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volatile uint16_t mcstate = 0x0000;
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uint8_t header[2];
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header[0] = 0x01;
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header[1] = MC_STATE1_BASE;
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uint32_t spi_timeout = ((uint32_t)1000); /*<! Value of Timeout when SPI communication fails */
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IRQ_DISABLE();
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/* Puts the SPI chip select low to start the transaction */
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st_lib_radio_spi_cs_low();
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for(volatile uint16_t index = 0; index < CS_TO_SCLK_DELAY; index++) {
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}
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/* Write the aHeader bytes and read the SPIRIT1 status bytes */
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st_lib_hal_spi_transmit_receive(&st_lib_p_spi_handle, (uint8_t *)&header[0], (uint8_t *)&mcstate, 1, spi_timeout);
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mcstate = mcstate << 8;
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/* Write the aHeader bytes and read the SPIRIT1 status bytes */
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st_lib_hal_spi_transmit_receive(&st_lib_p_spi_handle, (uint8_t *)&header[1], (uint8_t *)&mcstate, 1, spi_timeout);
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/* To be sure to don't rise the Chip Select before the end of last sending */
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while(st_lib_hal_spi_get_flag(&st_lib_p_spi_handle, SPI_FLAG_TXE) == RESET) ;
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/* Puts the SPI chip select high to end the transaction */
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st_lib_radio_spi_cs_high();
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IRQ_ENABLE();
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return mcstate;
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}
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