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