spi.c File Reference

Serial Peripheral Interface (SPI) driver for SAM.

Copyright (c) 2011-2018 Microchip Technology Inc. and its subsidiaries.

#include "spi.h"
#include "sysclk.h"

Macros
#define	SPI_WPMR_WPKEY_PASSWD   SPI_WPMR_WPKEY((uint32_t) 0x535049)

Functions
int16_t	spi_calc_baudrate_div (const uint32_t baudrate, uint32_t mck)
	Calculate the baudrate divider. More...
void	spi_configure_cs_behavior (Spi *p_spi, uint32_t ul_pcs_ch, uint32_t ul_cs_behavior)
	Configure CS behavior for SPI transfer (spi_cs_behavior_t). More...
void	spi_disable_clock (Spi *p_spi)
	Disable SPI clock. More...
void	spi_enable_clock (Spi *p_spi)
	Enable SPI clock. More...
uint32_t	spi_get_writeprotect_status (Spi *p_spi)
	Indicate write protect status. More...
spi_status_t	spi_read (Spi *p_spi, uint16_t *us_data, uint8_t *p_pcs)
	Read the received data and it's peripheral chip select value. More...
int16_t	spi_set_baudrate_div (Spi *p_spi, uint32_t ul_pcs_ch, uint8_t uc_baudrate_divider)
	Set Serial Clock Baud Rate divider value (SCBR). More...
void	spi_set_bits_per_transfer (Spi *p_spi, uint32_t ul_pcs_ch, uint32_t ul_bits)
	Set number of bits per transfer. More...
void	spi_set_clock_phase (Spi *p_spi, uint32_t ul_pcs_ch, uint32_t ul_phase)
	Set Data Capture Phase. More...
void	spi_set_clock_polarity (Spi *p_spi, uint32_t ul_pcs_ch, uint32_t ul_polarity)
	Set clock default state. More...
void	spi_set_delay_between_chip_select (Spi *p_spi, uint32_t ul_delay)
	Set delay between chip selects (in number of MCK clocks). More...
void	spi_set_peripheral_chip_select_value (Spi *p_spi, uint32_t ul_value)
	Set Peripheral Chip Select (PCS) value. More...
void	spi_set_transfer_delay (Spi *p_spi, uint32_t ul_pcs_ch, uint8_t uc_dlybs, uint8_t uc_dlybct)
	Configure timing for SPI transfer. More...
void	spi_set_writeprotect (Spi *p_spi, uint32_t ul_enable)
	Enable or disable write protection of SPI registers. More...
spi_status_t	spi_write (Spi *p_spi, uint16_t us_data, uint8_t uc_pcs, uint8_t uc_last)
	Write the transmitted data with specified peripheral chip select value. More...