ser_sam3.c File Reference

ARM UART and SPI I/O driver. More...

#include "hw/hw_ser.h"
#include <hw/hw_cpufreq.h>
#include "cfg/cfg_ser.h"
#include <cfg/debug.h>
#include <io/cm3.h>
#include <drv/irq_cm3.h>
#include <cpu/attr.h>
#include <drv/ser.h>
#include <drv/ser_p.h>
#include <struct/fifobuf.h>

Go to the source code of this file.

Data Structures

struct  ArmSerial
 Internal hardware state structure. More...

Defines

#define SERIRQ_PRIORITY   4
 default priority for serial irqs.
Overridable serial bus hooks

These can be redefined in hw.h to implement special bus policies such as half-duplex, 485, etc.

  TXBEGIN      TXCHAR      TXEND  TXOFF
    |   __________|__________ |     |
    |   |   |   |   |   |   | |     |
    v   v   v   v   v   v   v v     v
 ______  __  __  __  __  __  __  ________________
       \/  \/  \/  \/  \/  \/  \/
 ______/\__/\__/\__/\__/\__/\__/
#define SER_UART0_BUS_TXINIT
 Default TXINIT macro - invoked in uart0_init().
#define SER_UART0_BUS_TXBEGIN
 Invoked before starting a transmission.
#define SER_UART0_BUS_TXCHAR(c)
 Invoked to send one character.
#define SER_UART0_BUS_TXEND
 Invoked as soon as the txfifo becomes empty.
Overridable SPI hooks

These can be redefined in hw.h to implement special bus policies such as slave select pin handling, etc.

#define SER_SPI0_BUS_TXINIT
 Default TXINIT macro - invoked in spi_init() The default is no action.
#define SER_SPI0_BUS_TXCLOSE
 Invoked after the last character has been transmitted.

Functions

void uart0_irq_tx (void)
 Serial 0 TX interrupt handler.
void uart0_irq_rx (void)
 Serial 0 RX complete interrupt handler.
static DECLARE_ISR (uart0_irq_dispatcher)
 Serial IRQ dispatcher for USART0.
static DECLARE_ISR (spi0_irq_handler)
 SPI0 interrupt handler.

Detailed Description

ARM UART and SPI I/O driver.

Author:
Daniele Basile <asterix@develer.com>
Stefano Fedrigo <aleph@develer.com>

Definition in file ser_sam3.c.

Define Documentation

#define SER_SPI0_BUS_TXCLOSE
Value:
do { \
        /* Enable PIO on SPI pins */ \
        PIOA_PER = BV(SPI0_SPCK) | BV(SPI0_MOSI) | BV(SPI0_MISO); \
    } while (0)

Invoked after the last character has been transmitted.

The default is no action.

Definition at line 199 of file ser_sam3.c.

#define SER_UART0_BUS_TXINIT
Value:
do { \
        PIOA_PDR = BV(RXD0) | BV(TXD0); \
        PIO_PERIPH_SEL(PIOA_BASE, BV(RXD0) | BV(TXD0), USART0_PERIPH); \
    } while (0)

Default TXINIT macro - invoked in uart0_init().

  • Disable GPIO on USART0 tx/rx pins

Definition at line 92 of file ser_sam3.c.