freertos_usart_serial.c File Reference

FreeRTOS Peripheral Control API For the USART.

Copyright (c) 2012-2018 Microchip Technology Inc. and its subsidiaries.

#include <string.h>
#include "serial.h"
#include "freertos_usart_serial.h"
#include "freertos_peripheral_control_private.h"

Macros
#define	BITS_PER_5_MS   (200UL)
#define	IER_ERROR_INTERRUPTS   (US_IER_OVRE | US_IER_FRAME | US_IER_PARE)
#define	MASK_ALL_INTERRUPTS   (0xffffffffUL)
#define	RX_NOT_USED   (uint8_t *) 0x1
#define	SR_ERROR_INTERRUPTS   (US_CSR_OVRE | US_CSR_FRAME | US_CSR_PARE)

Enumerations
enum	buffer_operations {   data_added = 0,   data_removed,   data_added = 0,   data_removed }

Functions
static void	configure_rx_dma (uint32_t usart_index, enum buffer_operations operation_performed)
freertos_usart_if	freertos_usart_serial_init (Usart *p_usart, const sam_usart_opt_t *const uart_parameters, const freertos_peripheral_options_t *const freertos_driver_parameters)
	Initializes the FreeRTOS ASF USART driver for the specified USART port. More...
uint32_t	freertos_usart_serial_read_packet (freertos_usart_if p_usart, uint8_t *data, uint32_t len, portTickType block_time_ticks)
	Initiate a completely multi-byte read operation on a USART peripheral. More...
status_code_t	freertos_usart_write_packet_async (freertos_usart_if p_usart, const uint8_t *data, size_t len, portTickType block_time_ticks, xSemaphoreHandle notification_semaphore)
	Initiate a completely asynchronous multi-byte write operation on a USART peripheral. More...
static void	local_usart_handler (const portBASE_TYPE usart_index)

Variables
static const freertos_pdc_peripheral_parameters_t	all_usart_definitions [MAX_USARTS]
static freertos_pdc_rx_control_t	rx_buffer_definitions [MAX_USARTS]
static freertos_dma_event_control_t	tx_dma_control [MAX_USARTS]

#define BITS_PER_5_MS   (200UL)

Referenced by freertos_usart_serial_init().

#define IER_ERROR_INTERRUPTS   (US_IER_OVRE | US_IER_FRAME | US_IER_PARE)

Referenced by freertos_usart_serial_init().

#define MASK_ALL_INTERRUPTS   (0xffffffffUL)

Referenced by freertos_usart_serial_init().

#define RX_NOT_USED   (uint8_t *) 0x1

Referenced by freertos_usart_serial_init(), freertos_usart_serial_read_packet(), and local_usart_handler().

#define SR_ERROR_INTERRUPTS   (US_CSR_OVRE | US_CSR_FRAME | US_CSR_PARE)

Referenced by local_usart_handler().

enum buffer_operations

Enumerator
data_added
data_removed
data_added
data_removed

static void configure_rx_dma ( uint32_t  usart_index, enum buffer_operations  operation_performed  )

static

References configASSERT, data_added, freertos_pdc_rx_control::next_byte_to_read, NULL, freertos_pdc_rx_control::past_rx_buffer_end_address, pdc_enable_transfer(), pdc_rx_init(), freertos_pdc_rx_control::rx_pdc_parameters, pdc_packet::ul_addr, pdc_packet::ul_size, usart_disable_interrupt(), and usart_enable_interrupt().

Referenced by freertos_usart_serial_read_packet(), and local_usart_handler().

static void local_usart_handler ( const portBASE_TYPE  usart_index )

static

References configASSERT, configure_rx_dma(), data_added, freertos_pdc_rx_control::next_byte_to_read, NULL, freertos_pdc_rx_control::past_rx_buffer_end_address, pdFALSE, freertos_pdc_rx_control::rx_buffer_start_address, freertos_pdc_rx_control::rx_event_semaphore, RX_NOT_USED, freertos_pdc_rx_control::rx_pdc_parameters, SR_ERROR_INTERRUPTS, pdc_packet::ul_addr, pdc_packet::ul_size, usart_disable_interrupt(), usart_get_interrupt_mask(), usart_get_status(), usart_reset_status(), usart_start_rx_timeout(), and xSemaphoreGiveFromISR.

const freertos_pdc_peripheral_parameters_t all_usart_definitions[MAX_USARTS]

static

freertos_pdc_rx_control_t rx_buffer_definitions[MAX_USARTS]

static

freertos_dma_event_control_t tx_dma_control[MAX_USARTS]

static