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/*
* File : ls1c_spi.h
* This file is part of RT-Thread RTOS
* COPYRIGHT (C) 2006 - 2012, RT-Thread Development Team
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Change Logs:
* Date Author Notes
* 2017-10-23 ���� first version
*/
// Ӳ��spi�ӿڵ�ͷ�ļ�
#ifndef __OPENLOONGSON_SPI_H
#define __OPENLOONGSON_SPI_H
// SPIģ����
typedef enum
{
LS1C_SPI_0 = 0,
LS1C_SPI_1,
}ls1c_spi_t;
// Ƭѡ
#define LS1C_SPI_INVALID_CS (-1)
#define LS1C_SPI_CS_0 (0)
#define LS1C_SPI_CS_1 (1)
#define LS1C_SPI_CS_2 (2)
#define LS1C_SPI_CS_3 (3)
// ʱ�Ӽ��Ժ���λ
#define SPI_CPOL_1 (1)
#define SPI_CPOL_0 (0)
#define SPI_CPHA_1 (1)
#define SPI_CPHA_0 (0)
// Ӳ��SPI��Ϣ
typedef struct
{
ls1c_spi_t SPIx; // SPIģ����
unsigned long max_speed_hz; // ���ͨ���ٶȣ���λhz
unsigned char cs; // Ƭѡ
unsigned char cpol; // ʱ�Ӽ���
unsigned char cpha; // ʱ����λ
}ls1c_spi_info_t;
/*
* ��ʼ��ָ��SPIģ��
* @spi_info_p SPIģ����Ϣ
*/
void spi_init(ls1c_spi_info_t *spi_info_p);
/*
* ����ָ��ƬѡΪָ��״̬
* @spi_info_p SPIģ����Ϣ
* @new_status Ƭѡ���ŵ���״̬��ȡֵΪ0��1�����ߵ�ƽ��͵�ƽ
*/
void spi_set_cs(ls1c_spi_info_t *spi_info_p, int new_status);
/*
* ͨ��ָ��SPI���ͽ���һ���ֽ�
* ע�⣬�ڶ������ϵͳ�У��˺�����Ҫ���⡣
* ����֤�ں�ij�����豸�շ�ij���ֽڵĹ����У����ܱ��л�����������ͬʱ���������ͬһ��SPI�����ϵĴ��豸ͨ��
* ��Ϊ��о1c��ÿ·SPI�Ͽ��ܽ��в�ͬ�Ĵ��豸��ͨ��Ƶ�ʡ�ģʽ�ȿ��ܲ�ͬ
* @spi_info_p SPI�ӿ�
* @tx_ch �����͵�����
* @ret �յ�������
*/
unsigned char spi_txrx_byte(ls1c_spi_info_t *spi_info_p, unsigned char tx_ch);
/*
* ��ӡָ��SPIģ������мĴ�����ֵ
* @spi_info_p SPIģ����Ϣ
*/
void spi_print_all_regs_info(ls1c_spi_info_t *spi_info_p);
#endif
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