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[DeviceDriver][SPI] Fix 3 wires SPI issue.

This commit is contained in:
armink 2020-06-13 11:24:26 +08:00
parent b2e30a7efe
commit 202bde05ec
1 changed files with 14 additions and 12 deletions
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22
components/drivers/include/drivers/spi.h
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@ -1,11 +1,12 @@
/*
* Copyright (c) 2006-2018, RT-Thread Development Team
* Copyright (c) 2006-2020, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2012-11-23 Bernard Add extern "C"
* 2020-06-13 armink fix the 3 wires issue
*/
#ifndef __SPI_H__
@ -18,8 +19,6 @@
extern "C"{
#endif
#define RT_SPI_CPHA (1<<0) /* bit[0]:CPHA, clock phase */
#define RT_SPI_CPOL (1<<1) /* bit[1]:CPOL, clock polarity */
/**
* At CPOL=0 the base value of the clock is zero
* - For CPHA=0, data are captured on the clock's rising edge (low->high transition)
@ -32,27 +31,30 @@ extern "C"{
* - For CPHA=1, data are captured on clock's rising edge and data are propagated
* on a falling edge.
*/
#define RT_SPI_CPHA (1<<0) /* bit[0]:CPHA, clock phase */
#define RT_SPI_CPOL (1<<1) /* bit[1]:CPOL, clock polarity */
#define RT_SPI_LSB (0<<2) /* bit[2]: 0-LSB */
#define RT_SPI_MSB (1<<2) /* bit[2]: 1-MSB */
#define RT_SPI_MASTER (0<<3) /* SPI master device */
#define RT_SPI_SLAVE (1<<3) /* SPI slave device */
#define RT_SPI_CS_HIGH (1<<4) /* Chipselect active high */
#define RT_SPI_NO_CS (1<<5) /* No chipselect */
#define RT_SPI_3WIRE (1<<6) /* SI/SO pin shared */
#define RT_SPI_READY (1<<7) /* Slave pulls low to pause */
#define RT_SPI_MODE_MASK (RT_SPI_CPHA | RT_SPI_CPOL | RT_SPI_MSB | RT_SPI_SLAVE | RT_SPI_CS_HIGH | RT_SPI_NO_CS | RT_SPI_3WIRE | RT_SPI_READY)
#define RT_SPI_MODE_0 (0 | 0) /* CPOL = 0, CPHA = 0 */
#define RT_SPI_MODE_1 (0 | RT_SPI_CPHA) /* CPOL = 0, CPHA = 1 */
#define RT_SPI_MODE_2 (RT_SPI_CPOL | 0) /* CPOL = 1, CPHA = 0 */
#define RT_SPI_MODE_3 (RT_SPI_CPOL | RT_SPI_CPHA) /* CPOL = 1, CPHA = 1 */
#define RT_SPI_MODE_MASK (RT_SPI_CPHA | RT_SPI_CPOL | RT_SPI_MSB | RT_SPI_SLAVE)
#define RT_SPI_BUS_MODE_SPI (1<<0)
#define RT_SPI_BUS_MODE_QSPI (1<<1)
#define RT_SPI_CS_HIGH (1<<4) /* Chipselect active high */
#define RT_SPI_NO_CS (1<<5) /* No chipselect */
#define RT_SPI_3WIRE (1<<6) /* SI/SO pin shared */
#define RT_SPI_READY (1<<7) /* Slave pulls low to pause */
/**
* SPI message structure
*/