nes-proj/platform/stm32nucleo-spirit1/spirit1-arch.c
2015-07-24 16:30:10 +02:00

86 lines
3.6 KiB
C

/**
******************************************************************************
* @file main.c
* @author System LAB
* @version V1.0.0
* @date 17-June-2015
* @brief Source file for SPIRIT1
******************************************************************************
* @attention
*
* <h2><center>&copy; COPYRIGHT(c) 2014 STMicroelectronics</center></h2>
*
* 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 STMicroelectronics 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 COPYRIGHT HOLDERS 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 COPYRIGHT HOLDER 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.
*
******************************************************************************
*/
/* Includes ------------------------------------------------------------------*/
#include "stm32l1xx.h"
#include "spirit1-arch.h"
#include "spirit1.h"
extern void spirit1_interrupt_callback(void);
SpiritBool spiritdk_timer_expired = S_FALSE;
/*---------------------------------------------------------------------------*/
/*---------------------------------------------------------------------------*/
/* use the SPI-port to acquire the status bytes from the radio. */
#define CS_TO_SCLK_DELAY 0x0100
extern SPI_HandleTypeDef pSpiHandle;
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 SpiTimeout = ((uint32_t)1000); /*<! Value of Timeout when SPI communication fails */
IRQ_DISABLE();
/* Puts the SPI chip select low to start the transaction */
RadioSpiCSLow();
for (volatile uint16_t Index = 0; Index < CS_TO_SCLK_DELAY; Index++);
/* Write the aHeader bytes and read the SPIRIT1 status bytes */
HAL_SPI_TransmitReceive(&pSpiHandle, (uint8_t *)&header[0], (uint8_t *)&mcstate, 1, SpiTimeout);
mcstate = mcstate<<8;
/* Write the aHeader bytes and read the SPIRIT1 status bytes */
HAL_SPI_TransmitReceive(&pSpiHandle, (uint8_t *)&header[1], (uint8_t *)&mcstate, 1, SpiTimeout);
/* To be sure to don't rise the Chip Select before the end of last sending */
while (__HAL_SPI_GET_FLAG(&pSpiHandle, SPI_FLAG_TXE) == RESET);
/* Puts the SPI chip select high to end the transaction */
RadioSpiCSHigh();
IRQ_ENABLE();
return mcstate;
}