serial_drv.c File Reference

Handles Serial driver functionalities.

Copyright (c) 2017-2018 Microchip Technology Inc. and its subsidiaries.

#include <asf.h>
#include <string.h>
#include "ble_utils.h"
#include "serial_drv.h"
#include "conf_serialdrv.h"
#include "serial_fifo.h"
#include "platform.h"

Macros
#define	ioport_set_pin_peripheral_mode(pin, mode)
	Set peripheral mode for one single IOPORT pin. More...

Functions
void	ble_pdc_send_data (uint8_t *buf, uint16_t len)
static void	ble_pdc_serial_drv_send (uint8_t *data, uint16_t len)
static void	ble_pdc_uart_handler (void)
void	BLE_UART_Handler (void)
static uint8_t	configure_primary_uart (uint32_t bus_baudrate)
uint8_t	configure_serial_drv (uint32_t bus_baudrate)
	Initializes the Serial IO Module. More...
void	configure_usart_after_patch (uint32_t bus_baudrate)
static void	pdc_update_rx_transfer (void)
void	platform_configure_sleep_manager (void)
void	platform_enter_critical_section (void)
void	platform_leave_critical_section (void)
void	platform_pdc_process_rxdata (uint8_t *buf, uint16_t len)
void	platform_restore_from_sleep (void)
uint32_t	platform_serial_drv_tx_status (void)
void	platform_set_ble_rts_high (void)
void	platform_set_ble_rts_low (void)
void	platform_set_hostsleep (void)
uint16_t	serial_drive_rx_data_count (void)
uint16_t	serial_drv_send (uint8_t *data, uint16_t len)
	Transmits data via UART. More...
static uint32_t	usart_clear_tx_empty (Usart *p_usart)
static uint32_t	usart_is_rx_buffer_overrun (Usart *p_usart)
static uint32_t	usart_is_rx_timeout (Usart *p_usart)

Variables
static volatile uint16_t	ble_txbyte_count = 0
Pdc *	ble_usart_pdc
pdc_packet_t	ble_usart_rx_pkt
volatile bool	ble_usart_tx_cmpl = true
pdc_packet_t	ble_usart_tx_pkt
enum sleepmgr_mode	current_sleep_mode = SLEEPMGR_ACTIVE
volatile uint16_t	dma_buf_index
uint16_t	g_txdata
uint8_t	pdc_rx_buffer [BLE_MAX_RX_PAYLOAD_SIZE]
volatile bool	pdc_uart_enabled = false

#define ioport_set_pin_peripheral_mode	(		pin,
			mode
	)

Value:

do {\
		ioport_set_pin_mode(pin, mode);\
		ioport_disable_pin(pin);\
    } while (0)

Set peripheral mode for one single IOPORT pin.

It will configure port mode and disable pin mode (but enable peripheral).

Parameters

pin	IOPORT pin to configure
mode	Mode masks to configure for the specified pin (IOPORT Modes)

Referenced by configure_primary_uart().

void ble_pdc_send_data	(	uint8_t *	buf,
		uint16_t	len
	)

References BLE_UART, ble_usart_pdc, pdc_tx_init(), pdc_packet::ul_addr, pdc_packet::ul_size, and usart_enable_interrupt().

Referenced by ble_pdc_serial_drv_send().

static void ble_pdc_serial_drv_send ( uint8_t *  data, uint16_t  len  )

inlinestatic

References ble_pdc_send_data(), and ble_usart_tx_cmpl.

Referenced by serial_drv_send().

static void ble_pdc_uart_handler ( void  )

inlinestatic

References BLE_UART, ble_usart_pdc, ble_usart_tx_cmpl, dma_buf_index, pdc_read_rx_counter(), pdc_update_rx_transfer(), platform_dma_process_rxdata(), SERIAL_DRV_RX_CB, pdc_packet::ul_addr, pdc_packet::ul_size, usart_clear_tx_empty(), usart_disable_interrupt(), usart_is_rx_buf_full(), usart_is_rx_buffer_overrun(), usart_is_rx_timeout(), usart_is_tx_empty(), usart_reset_status(), and usart_start_rx_timeout().

Referenced by BLE_UART_Handler().

void BLE_UART_Handler

(

void

)

References ble_pdc_uart_handler().

static uint8_t configure_primary_uart ( uint32_t  bus_baudrate )

inlinestatic

References sam_usart_opt_t::baudrate, BLE_MAX_RX_PAYLOAD_SIZE, BLE_UART, BLE_UART_ID, BLE_UART_IRQn, ble_usart_pdc, dma_buf_index, gpio_configure_pin, IOPORT_MODE_PULLUP, ioport_set_pin_peripheral_mode, pdc_enable_transfer(), pdc_rx_buffer, pdc_rx_init(), pdc_uart_enabled, PIO_DEFAULT, PIO_PERIPH_A, PIO_PULLUP, RX_TIMEOUT_VALUE, STATUS_OK, sysclk_enable_peripheral_clock(), sysclk_get_peripheral_hz(), pdc_packet::ul_addr, pdc_packet::ul_size, usart_enable_interrupt(), usart_enable_rx(), usart_enable_tx(), usart_get_pdc_base(), usart_init_hw_handshaking(), usart_init_rs232(), usart_reset(), usart_set_rx_timeout(), usart_set_sleepwalking(), and usart_start_rx_timeout().

Referenced by configure_serial_drv(), and configure_usart_after_patch().

uint8_t configure_serial_drv

(

uint32_t

)

Initializes the Serial IO Module.

Returns

STATUS_OK for successful initialization and FAILURE incase the IO is not initialized

References configure_primary_uart(), and STATUS_OK.

Referenced by platform_configure_primary_uart(), and platform_init().

void configure_usart_after_patch

(

uint32_t

bus_baudrate

)

References configure_primary_uart().

Referenced by platform_configure_hw_fc_uart().

static void pdc_update_rx_transfer ( void  )

inlinestatic

References BLE_MAX_RX_PAYLOAD_SIZE, ble_usart_pdc, dma_buf_index, pdc_rx_buffer, pdc_rx_init(), pdc_packet::ul_addr, and pdc_packet::ul_size.

Referenced by ble_pdc_uart_handler().

void platform_configure_sleep_manager

(

void

)

References current_sleep_mode, sleepmgr_init(), and sleepmgr_lock_mode().

Referenced by platform_init().

void platform_enter_critical_section

(

void

)

References Disable_global_interrupt.

Referenced by platform_start_timer(), and platform_stop_timer().

void platform_leave_critical_section

(

void

)

References Enable_global_interrupt.

Referenced by platform_start_timer(), and platform_stop_timer().

void platform_pdc_process_rxdata	(	uint8_t *	buf,
		uint16_t	len
	)

void platform_restore_from_sleep

(

void

)

References current_sleep_mode, SLEEPMGR_ACTIVE, sleepmgr_lock_mode(), and sleepmgr_unlock_mode().

Referenced by platform_enter_sleep().

uint32_t platform_serial_drv_tx_status

(

void

)

References ble_usart_tx_cmpl.

void platform_set_ble_rts_high

(

void

)

References BLE_UART, and usart_drive_RTS_pin_low().

Referenced by platform_enter_sleep().

void platform_set_ble_rts_low

(

void

)

References BLE_UART, and usart_drive_RTS_pin_high().

Referenced by platform_enter_sleep().

void platform_set_hostsleep

(

void

)

References current_sleep_mode, sleepmgr_enter_sleep(), sleepmgr_lock_mode(), SLEEPMGR_SLEEP_WFI, and sleepmgr_unlock_mode().

Referenced by platform_enter_sleep().

uint16_t serial_drive_rx_data_count

(

void

)

References ble_usart_pdc, dma_buf_index, pdc_read_rx_counter(), and pdc_packet::ul_size.

Referenced by platform_enter_sleep(), and platform_gpio_set().

uint16_t serial_drv_send	(	uint8_t *	data,
		uint16_t	len
	)

Transmits data via UART.

Parameters

data	Pointer to the buffer where the data to be transmitted is present
length	Number of bytes to be transmitted

Returns

Number of bytes actually transmitted

References ble_pdc_serial_drv_send(), pdc_uart_enabled, and STATUS_OK.

Referenced by platform_send_sync().

static uint32_t usart_clear_tx_empty ( Usart *  p_usart )

inlinestatic

Referenced by ble_pdc_uart_handler().

static uint32_t usart_is_rx_buffer_overrun ( Usart *  p_usart )

inlinestatic

Referenced by ble_pdc_uart_handler().

static uint32_t usart_is_rx_timeout ( Usart *  p_usart )

inlinestatic

Referenced by ble_pdc_uart_handler().

volatile uint16_t ble_txbyte_count = 0

static

Pdc* ble_usart_pdc

Referenced by ble_pdc_send_data(), ble_pdc_uart_handler(), configure_primary_uart(), pdc_update_rx_transfer(), and serial_drive_rx_data_count().

pdc_packet_t ble_usart_rx_pkt

volatile bool ble_usart_tx_cmpl = true

Referenced by ble_pdc_serial_drv_send(), ble_pdc_uart_handler(), and platform_serial_drv_tx_status().

pdc_packet_t ble_usart_tx_pkt

enum sleepmgr_mode current_sleep_mode = SLEEPMGR_ACTIVE

Referenced by platform_configure_sleep_manager(), platform_restore_from_sleep(), and platform_set_hostsleep().

volatile uint16_t dma_buf_index

Referenced by ble_pdc_uart_handler(), configure_primary_uart(), pdc_update_rx_transfer(), and serial_drive_rx_data_count().

uint16_t g_txdata

uint8_t pdc_rx_buffer[BLE_MAX_RX_PAYLOAD_SIZE]

Referenced by configure_primary_uart(), and pdc_update_rx_transfer().

volatile bool pdc_uart_enabled = false

Referenced by configure_primary_uart(), and serial_drv_send().