ssp_13xx.h

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/*
 * @brief LPC13xx SSP driver
 *
 * @note
 * Copyright(C) NXP Semiconductors, 2012
 * All rights reserved.
 *
 * @par
 * Software that is described herein is for illustrative purposes only
 * which provides customers with programming information regarding the
 * LPC products.  This software is supplied "AS IS" without any warranties of
 * any kind, and NXP Semiconductors and its licensor disclaim any and
 * all warranties, express or implied, including all implied warranties of
 * merchantability, fitness for a particular purpose and non-infringement of
 * intellectual property rights.  NXP Semiconductors assumes no responsibility
 * or liability for the use of the software, conveys no license or rights under any
 * patent, copyright, mask work right, or any other intellectual property rights in
 * or to any products. NXP Semiconductors reserves the right to make changes
 * in the software without notification. NXP Semiconductors also makes no
 * representation or warranty that such application will be suitable for the
 * specified use without further testing or modification.
 *
 * @par
 * Permission to use, copy, modify, and distribute this software and its
 * documentation is hereby granted, under NXP Semiconductors' and its
 * licensor's relevant copyrights in the software, without fee, provided that it
 * is used in conjunction with NXP Semiconductors microcontrollers.  This
 * copyright, permission, and disclaimer notice must appear in all copies of
 * this code.
 */

#ifndef __SSP_13XX_H_
#define __SSP_13XX_H_

#ifdef __cplusplus
extern "C" {
#endif

/*
 * @brief SSP clock format
 */
typedef enum CHIP_SSP_CLOCK_FORMAT {
 SSP_CLOCK_CPHA0_CPOL0 = (0 << 6),   
 SSP_CLOCK_CPHA0_CPOL1 = (1u << 6),   
 SSP_CLOCK_CPHA1_CPOL0 = (2u << 6),   
 SSP_CLOCK_CPHA1_CPOL1 = (3u << 6),   
 SSP_CLOCK_MODE0 = SSP_CLOCK_CPHA0_CPOL0, 
 SSP_CLOCK_MODE1 = SSP_CLOCK_CPHA1_CPOL0, 
 SSP_CLOCK_MODE2 = SSP_CLOCK_CPHA0_CPOL1, 
 SSP_CLOCK_MODE3 = SSP_CLOCK_CPHA1_CPOL1, 
} CHIP_SSP_CLOCK_MODE_T;

/*
 * @brief SSP frame format
 */
typedef enum CHIP_SSP_FRAME_FORMAT {
 SSP_FRAMEFORMAT_SPI = (0 << 4),   
 CHIP_SSP_FRAME_FORMAT_TI = (1u << 4), 
 SSP_FRAMEFORMAT_MICROWIRE = (2u << 4), 
} CHIP_SSP_FRAME_FORMAT_T;

/*
 * @brief Number of bits per frame
 */
typedef enum CHIP_SSP_BITS {
 SSP_BITS_4 = (3u << 0),  
 SSP_BITS_5 = (4u << 0),  
 SSP_BITS_6 = (5u << 0),  
 SSP_BITS_7 = (6u << 0),  
 SSP_BITS_8 = (7u << 0),  
 SSP_BITS_9 = (8u << 0),  
 SSP_BITS_10 = (9u << 0), 
 SSP_BITS_11 = (10u << 0), 
 SSP_BITS_12 = (11u << 0), 
 SSP_BITS_13 = (12u << 0), 
 SSP_BITS_14 = (13u << 0), 
 SSP_BITS_15 = (14u << 0), 
 SSP_BITS_16 = (15u << 0), 
} CHIP_SSP_BITS_T;

/*
 * @brief SSP config format
 */
typedef struct SSP_ConfigFormat {
 CHIP_SSP_BITS_T bits;     
 CHIP_SSP_CLOCK_MODE_T clockMode; 
 CHIP_SSP_FRAME_FORMAT_T frameFormat; 
} SSP_ConfigFormat;

/*
 * @brief SSP mode
 */
typedef enum CHIP_SSP_MODE {
 SSP_MODE_MASTER = (0 << 2), 
 SSP_MODE_SLAVE = (1u << 2), 
} CHIP_SSP_MODE_T;

/*
 * @brief SPI address
 */
typedef struct {
 uint8_t port;
 uint8_t pin;
} SPI_Address_t;

/*
 * @brief SSP data setup structure
 */
typedef struct {
 void      *tx_data;  
 uint32_t  tx_cnt;  
 void      *rx_data;  
 uint32_t  rx_cnt;  
 uint32_t  length;  
} Chip_SSP_DATA_SETUP_T;

#define SSP_CPHA_FIRST          SSP_CR0_CPHA_FIRST
#define SSP_CPHA_SECOND         SSP_CR0_CPHA_SECOND

/* There's no bug here!!!
 * - If bit[6] in SSPnCR0 is 0: SSP controller maintains the bus clock low between frames.
 * That means the active clock is in HI state.
 * - If bit[6] in SSPnCR0 is 1 (SSP_CR0_CPOL_HI): SSP controller maintains the bus clock
 * high between frames. That means the active clock is in LO state.
 */
#define SSP_CPOL_HI             SSP_CR0_CPOL_LO
#define SSP_CPOL_LO             SSP_CR0_CPOL_HI

#define SSP_SLAVE_MODE          SSP_CR1_SLAVE_EN
#define SSP_MASTER_MODE         SSP_CR1_MASTER_EN

STATIC INLINE FlagStatus Chip_SSP_GetStatus(LPC_SSP_T *pSSP, IP_SSP_STATUS_T Stat)
{
 return IP_SSP_GetStatus(pSSP, Stat);
}

STATIC INLINE void Chip_SSP_Enable(LPC_SSP_T *pSSP)
{
 IP_SSP_Enable(pSSP);
}

STATIC INLINE void Chip_SSP_Disable(LPC_SSP_T *pSSP)
{
 IP_SSP_Disable(pSSP);
}

STATIC INLINE void Chip_SSP_EnableLoopBack(LPC_SSP_T *pSSP)
{
 IP_SSP_EnableLoopBack(pSSP);
}

STATIC INLINE void Chip_SSP_DisableLoopBack(LPC_SSP_T *pSSP)
{
 IP_SSP_DisableLoopBack(pSSP);
}

void Chip_SSP_Int_FlushData(LPC_SSP_T *pSSP);

Status Chip_SSP_Int_RWFrames8Bits(LPC_SSP_T *pSSP, Chip_SSP_DATA_SETUP_T *xf_setup);

Status Chip_SSP_Int_RWFrames16Bits(LPC_SSP_T *pSSP, Chip_SSP_DATA_SETUP_T *xf_setup);

uint32_t Chip_SSP_RWFrames_Blocking(LPC_SSP_T *pSSP, Chip_SSP_DATA_SETUP_T *xf_setup);

uint32_t Chip_SSP_WriteFrames_Blocking(LPC_SSP_T *pSSP, uint8_t *buffer, uint32_t buffer_len);

uint32_t Chip_SSP_ReadFrames_Blocking(LPC_SSP_T *pSSP, uint8_t *buffer, uint32_t buffer_len);

void Chip_SSP_Init(LPC_SSP_T *pSSP);

void Chip_SSP_DeInit(LPC_SSP_T *pSSP);

void Chip_SSP_SetMaster(LPC_SSP_T *pSSP, bool master);

void Chip_SSP_SetBitRate(LPC_SSP_T *pSSP, uint32_t bitRate);

STATIC INLINE void Chip_SSP_SetFormat(LPC_SSP_T *pSSP, SSP_ConfigFormat *format)
{
 IP_SSP_SetFormat(pSSP, format->bits, format->frameFormat, format->clockMode);
}

STATIC INLINE void Chip_SSP_Int_Enable(LPC_SSP_T *pSSP)
{
 IP_SSP_Int_Enable(pSSP, SSP_TXIM);
}

STATIC INLINE void Chip_SSP_Int_Disable(LPC_SSP_T *pSSP)
{
 IP_SSP_Int_Disable(pSSP, SSP_TXIM);
}

#ifdef __cplusplus
}
#endif

#endif /* __SSP_13XX_H_ */