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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����
#define LS1C_SPI_0 (0)
#define LS1C_SPI_1 (1)
// Ƭѡ
#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)
// �Ĵ���ƫ��
#define LS1C_SPI_SPCR_OFFSET (0) // ���ƼĴ���
#define LS1C_SPI_SPSR_OFFSET (1) // ״̬�Ĵ���
#define LS1C_SPI_TxFIFO_OFFSET (2) // ���͵����ݼĴ�������������ݼĴ�����ƫ����ͬ
#define LS1C_SPI_RxFIFO_OFFSET (2) // ���յ����ݼĴ������뷢�����ݼĴ�����ƫ����ͬ
#define LS1C_SPI_SPER_OFFSET (3) // �ⲿ�Ĵ���
#define LS1C_SPI_SFC_PARAM_OFFSET (4) // �������ƼĴ���
#define LS1C_SPI_SFC_SOFTCS_OFFSET (5) // Ƭѡ���ƼĴ���
#define LS1C_SPI_SFC_TIMING_OFFSET (6) // ʱ����ƼĴ���
// �Ĵ���SPCR�е�λ��
#define LS1C_SPI_SPCR_SPIE_BIT (7)
#define LS1C_SPI_SPCR_SPIE_MASK (0x01 << LS1C_SPI_SPCR_SPIE_BIT)
#define LS1C_SPI_SPCR_SPE_BIT (6)
#define LS1C_SPI_SPCR_SPE_MASK (0x01 << LS1C_SPI_SPCR_SPE_BIT)
#define LS1C_SPI_SPCR_CPOL_BIT (3)
#define LS1C_SPI_SPCR_CPOL_MASK (0x01 << LS1C_SPI_SPCR_CPOL_BIT)
#define LS1C_SPI_SPCR_CPHA_BIT (2)
#define LS1C_SPI_SPCR_CPHA_MASK (0x01 << LS1C_SPI_SPCR_CPHA_BIT)
#define LS1C_SPI_SPCR_SPR_BIT (0)
#define LS1C_SPI_SPCR_SPR_MASK (0x03 << LS1C_SPI_SPCR_SPR_BIT)
// �Ĵ���SPSR�е�λ��
#define LS1C_SPI_SPSR_SPIF_BIT (7)
#define LS1C_SPI_SPSR_SPIF_MASK (0x01 << LS1C_SPI_SPSR_SPIF_BIT)
#define LS1C_SPI_SPSR_WCOL_BIT (6)
#define LS1C_SPI_SPSR_WCOL_MASK (0x01 << LS1C_SPI_SPSR_WCOL_BIT)
// �Ĵ���SPER�е�λ��
#define LS1C_SPI_SPER_SPRE_BIT (0)
#define LS1C_SPI_SPER_SPRE_MASK (0x3 << LS1C_SPI_SPER_SPRE_BIT)
// �Ĵ���SFC_SOFTCS��λ��
#define LS1C_SPI_SFC_SOFTCS_CSN_BIT (4)
#define LS1C_SPI_SFC_SOFTCS_CSN_MASK (0x0f << LS1C_SPI_SFC_SOFTCS_CSN_BIT)
#define LS1C_SPI_SFC_SOFTCS_CSEN_BIT (0)
#define LS1C_SPI_SFC_SOFTCS_CSEN_MASK (0x0f << LS1C_SPI_SFC_SOFTCS_CSEN_BIT)
// ���ͳ�ʱ������ֵ
#define LS1C_SPI_TX_TIMEOUT (20000)
/*
* ��ȡָ��SPIģ��Ļ���ַ
* @SPIx SPIģ��ı��
*/
inline void *ls1c_spi_get_base(unsigned char SPIx);
/*
* ����ʱ��
* @spi_base ����ַ
* @max_hz ���Ƶ�ʣ���λhz
*/
void ls1c_spi_set_clock(void *spi_base, unsigned long max_hz);
/*
* ����ͨ��ģʽ(ʱ�Ӽ��Ժ���λ)
* @spi_base ����ַ
* @cpol ʱ�Ӽ���
* @cpha ʱ����λ
*/
void ls1c_spi_set_mode(void *spi_base, unsigned char cpol, unsigned char cpha);
/*
* ����ָ��ƬѡΪָ��״̬
* @spi_base ����ַ
* @cs Ƭѡ
* @new_status Ƭѡ���ŵ���״̬��ȡֵΪ0��1�����ߵ�ƽ��͵�ƽ
*/
void ls1c_spi_set_cs(void *spi_base, unsigned char cs, 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_base ����ַ
* @tx_ch �����͵�����
* @ret �յ�������
*/
unsigned char ls1c_spi_txrx_byte(void *spi_base, unsigned char tx_ch);
/*
* ��ӡָ��SPIģ������мĴ�����ֵ
* @spi_base ����ַ
*/
void ls1c_spi_print_all_regs_info(void *spi_base);
#endif
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