adp_interface_spi.c File Reference

ADP SPI interface implementation.

Copyright (c) 2015-2018 Microchip Technology Inc. and its subsidiaries.

#include <compiler.h>
#include <asf.h>
#include "adp_interface.h"

Macros
#define	SPI_BAUDRATE   1500000
#define	SPI_CHIP_SEL   SPI_NPCS3_PA5_GPIO
#define	SPI_DEVICE_ID   3
Embedded debugger SPI interface definitions
#define	EDBG_SPI_MODULE   SPI

Functions
enum status_code	adp_interface_init (void)
	Initialize EDBG SPI communication for SAM. More...
enum status_code	adp_interface_read_response (uint8_t *rx_buf, uint16_t length)
	Read response on SPI from PC. More...
static void	adp_interface_send_start (void)
	Send SPI start condition. More...
static void	adp_interface_send_stop (void)
	Send SPI stop condition. More...
static void	adp_interface_transceive (uint8_t *tx_data, uint8_t *rx_data, uint16_t length)
	Sends and reads data byte on SPI. More...
void	adp_interface_transceive_procotol (uint8_t *tx_buf, uint16_t length, uint8_t *rx_buf)
	Sends and reads protocol packet data byte on SPI. More...

Variables
struct spi_device	SPI_DEVICE

#define EDBG_SPI_MODULE   SPI

Referenced by adp_interface_init(), adp_interface_read_response(), adp_interface_send_start(), adp_interface_send_stop(), and adp_interface_transceive().

#define SPI_BAUDRATE   1500000

Referenced by adp_interface_init().

#define SPI_CHIP_SEL   SPI_NPCS3_PA5_GPIO

#define SPI_DEVICE_ID   3

enum status_code adp_interface_init

(

void

)

Initialize EDBG SPI communication for SAM.

References EDBG_SPI_MODULE, SPI_BAUDRATE, spi_enable(), spi_master_init(), spi_master_setup_device(), SPI_MODE_0, STATUS_OK, and sysclk_init().

enum status_code adp_interface_read_response	(	uint8_t *	rx_buf,
		uint16_t	length
	)

Read response on SPI from PC.

return Status

Parameters

[in]	rx_buf	Pointer to receive the data
[in]	length	The length of the read data
[out]	rx_buf	Pointer to store the received SPI character

References adp_interface_send_start(), adp_interface_send_stop(), EDBG_SPI_MODULE, spi_read_packet(), and status.

Referenced by adp_interface_transceive_procotol().

static void adp_interface_send_start ( void  )

static

Send SPI start condition.

References EDBG_SPI_MODULE, and spi_select_device().

Referenced by adp_interface_read_response(), and adp_interface_transceive_procotol().

static void adp_interface_send_stop ( void  )

static

Send SPI stop condition.

References EDBG_SPI_MODULE, and spi_deselect_device().

Referenced by adp_interface_read_response(), and adp_interface_transceive_procotol().

static void adp_interface_transceive ( uint8_t *  tx_data, uint8_t *  rx_data, uint16_t  length  )

static

Sends and reads data byte on SPI.

Parameters

[in]	data	Data byte to send
[in]	tx_data	SPI character to transmit
[out]	rx_data	Pointer to store the received SPI character

References EDBG_SPI_MODULE, and spi_transceive_packet().

Referenced by adp_interface_transceive_procotol().

void adp_interface_transceive_procotol	(	uint8_t *	tx_buf,
		uint16_t	length,
		uint8_t *	rx_buf
	)

Sends and reads protocol packet data byte on SPI.

Parameters

[in]	tx_buf	Pointer to send the protocol packet data
[in]	length	The length of the send protocol packet data
[out]	rx_buf	Pointer to store the received SPI character

References adp_interface_send_start(), adp_interface_send_stop(), and adp_interface_transceive().

struct spi_device SPI_DEVICE

Initial value:

= {
    
    .id = SPI_DEVICE_ID
}