serial.c File Reference

Serial communication for the PX4IO module. More...

#include <stdint.h>
#include <unistd.h>
#include <termios.h>
#include <fcntl.h>
#include <string.h>
#include <nuttx/arch.h>
#include <arch/board/board.h>
#include <chip.h>
#include <up_internal.h>
#include <up_arch.h>
#include <stm32.h>
#include <perf/perf_counter.h>
#include "px4io.h"

Include dependency graph for serial.c:

Go to the source code of this file.

Macros
#define	REG(_x)   (*(volatile uint32_t *)(PX4FMU_SERIAL_BASE + _x))
#define	rSR   REG(STM32_USART_SR_OFFSET)
#define	rDR   REG(STM32_USART_DR_OFFSET)
#define	rBRR   REG(STM32_USART_BRR_OFFSET)
#define	rCR1   REG(STM32_USART_CR1_OFFSET)
#define	rCR2   REG(STM32_USART_CR2_OFFSET)
#define	rCR3   REG(STM32_USART_CR3_OFFSET)
#define	rGTPR   REG(STM32_USART_GTPR_OFFSET)

Functions
static void	rx_handle_packet (void)
static void	rx_dma_callback (DMA_HANDLE handle, uint8_t status, void *arg)
static int	serial_interrupt (int irq, void *context, FAR void *arg)
static void	dma_reset (void)
void	interface_init (void)
	FMU communications. More...

Variables
static perf_counter_t	pc_txns
static perf_counter_t	pc_errors
static perf_counter_t	pc_ore
static perf_counter_t	pc_fe
static perf_counter_t	pc_ne
static perf_counter_t	pc_idle
static perf_counter_t	pc_badidle
static perf_counter_t	pc_regerr
static perf_counter_t	pc_crcerr
static DMA_HANDLE	tx_dma
static DMA_HANDLE	rx_dma
static struct IOPacket	dma_packet

Detailed Description

Serial communication for the PX4IO module.

Definition in file serial.c.

Macro Definition Documentation

rBRR

#define rBRR   REG(STM32_USART_BRR_OFFSET)

Definition at line 83 of file serial.c.

Referenced by interface_init().

rCR1

#define rCR1   REG(STM32_USART_CR1_OFFSET)

Definition at line 84 of file serial.c.

Referenced by interface_init(), and serial_interrupt().

rCR2

#define rCR2   REG(STM32_USART_CR2_OFFSET)

Definition at line 85 of file serial.c.

Referenced by interface_init().

rCR3

#define rCR3   REG(STM32_USART_CR3_OFFSET)

Definition at line 86 of file serial.c.

Referenced by dma_reset(), interface_init(), and rx_dma_callback().

rDR

#define rDR   REG(STM32_USART_DR_OFFSET)

Definition at line 82 of file serial.c.

Referenced by dma_reset(), interface_init(), rx_dma_callback(), and serial_interrupt().

REG

#define REG

(

_x

)

(*(volatile uint32_t *)(PX4FMU_SERIAL_BASE + _x))

Definition at line 80 of file serial.c.

rGTPR

#define rGTPR   REG(STM32_USART_GTPR_OFFSET)

Definition at line 87 of file serial.c.

rSR

#define rSR   REG(STM32_USART_SR_OFFSET)

Definition at line 81 of file serial.c.

Referenced by dma_reset(), interface_init(), and serial_interrupt().

Function Documentation

dma_reset()

static void dma_reset ( void  )

static

Definition at line 332 of file serial.c.

References dma_packet, rCR3, rDR, rSR, rx_dma, rx_dma_callback(), and tx_dma.

Referenced by interface_init(), rx_dma_callback(), and serial_interrupt().

Here is the call graph for this function:

Here is the caller graph for this function:

interface_init()

void interface_init

(

void

)

FMU communications.

Definition at line 90 of file serial.c.

References debug, dma_reset(), PC_COUNT, PC_ELAPSED, perf_alloc, rBRR, rCR1, rCR2, rCR3, rDR, rSR, rx_dma, serial_interrupt(), and tx_dma.

Referenced by user_start().

Here is the call graph for this function:

Here is the caller graph for this function:

rx_dma_callback()

static void rx_dma_callback ( DMA_HANDLE  handle, uint8_t  status, void *  arg  )

static

Definition at line 222 of file serial.c.

References IOPacket::crc, crc_packet(), dma_packet, dma_reset(), perf_begin(), perf_end(), PKT_SIZE, rCR3, rDR, rx_handle_packet(), and tx_dma.

Referenced by dma_reset(), and serial_interrupt().

Here is the call graph for this function:

Here is the caller graph for this function:

rx_handle_packet()

static void rx_handle_packet ( void  )

static

Definition at line 156 of file serial.c.

References IOPacket::count_code, IOPacket::crc, crc_packet(), dma_packet, IOPacket::offset, IOPacket::page, perf_count(), PKT_CODE, PKT_CODE_CORRUPT, PKT_CODE_ERROR, PKT_CODE_READ, PKT_CODE_SUCCESS, PKT_CODE_WRITE, PKT_COUNT, PKT_MAX_REGS, registers_get(), registers_set(), and IOPacket::regs.

Referenced by rx_dma_callback().

Here is the call graph for this function:

Here is the caller graph for this function:

serial_interrupt()

static int serial_interrupt ( int  irq, void *  context, FAR void *  arg  )

static

Definition at line 258 of file serial.c.

References dma_packet, dma_reset(), perf_count(), PKT_SIZE, rCR1, rDR, rSR, rx_dma, and rx_dma_callback().

Referenced by interface_init().

Here is the call graph for this function:

Here is the caller graph for this function:

Variable Documentation

dma_packet

struct IOPacket dma_packet

static

Definition at line 77 of file serial.c.

Referenced by dma_reset(), rx_dma_callback(), rx_handle_packet(), and serial_interrupt().

pc_badidle

perf_counter_t pc_badidle

static

Definition at line 65 of file serial.c.

pc_crcerr

perf_counter_t pc_crcerr

static

Definition at line 67 of file serial.c.

pc_errors

perf_counter_t pc_errors

static

Definition at line 60 of file serial.c.

pc_fe

perf_counter_t pc_fe

static

Definition at line 62 of file serial.c.

pc_idle

perf_counter_t pc_idle

static

Definition at line 64 of file serial.c.

pc_ne

perf_counter_t pc_ne

static

Definition at line 63 of file serial.c.

pc_ore

perf_counter_t pc_ore

static

Definition at line 61 of file serial.c.

pc_regerr

perf_counter_t pc_regerr

static

Definition at line 66 of file serial.c.

pc_txns

perf_counter_t pc_txns

static

Definition at line 59 of file serial.c.

rx_dma

DMA_HANDLE rx_dma

static

Definition at line 72 of file serial.c.

Referenced by dma_reset(), interface_init(), and serial_interrupt().

tx_dma

DMA_HANDLE tx_dma

static

Definition at line 71 of file serial.c.

Referenced by dma_reset(), interface_init(), and rx_dma_callback().