sam7fc/include/at91_twi.h

58 lines
1.3 KiB
C
Raw Normal View History

2008-02-03 21:41:39 +01:00
#ifndef AT91TWI_H_
#define AT91TWI_H_
#include <list.h>
/* TWI slave addresses */
#define TWI_ADDR_BL1 0x21
#define TWI_ADDR_BL2 0x22
#define TWI_ADDR_BL3 0x23
#define TWI_ADDR_BL4 0x24
#define TWI_ADDR_EEPROM 0x40
/* TWIBOOT commands */
#define CMD_WAIT 0x00
#define CMD_GET_INFO 0x10
#define CMD_GET_SIGNATURE 0x11
#define CMD_WRITE_FLASH 0x12
#define CMD_READ_FLASH 0x13
#define CMD_WRITE_EEPROM 0x14
#define CMD_READ_EEPROM 0x15
#define CMD_BOOT_APPLICATION 0x1F
/* blctrl commands */
//#define CMD_WAIT 0x00
//#define CMD_GET_INFO 0x10
#define CMD_SET_PWM 0x21
#define CMD_GET_STATUS 0x22
//#define CMD_SET_PARAM 0x23
//#define CMD_GET_PARAM 0x24
#define CMD_BOOT_LOADER 0x2F
struct blmc_cmd {
uint32_t cmd; /* cmd byte(s) */
uint8_t mode; /* read/write, cmdlen (1-3 bytes) */
uint8_t size; /* data size */
uint8_t *data; /* read/write data */
};
/* same bits as TWI_MMR[8..15] */
#define BLMC_CMD_READ 0x10
#define BLMC_CMD_WRITE 0x00
#define BLMC_CMD_0_ARG 0x01
#define BLMC_CMD_1_ARG 0x02
#define BLMC_CMD_2_ARG 0x03
uint32_t twi_read_eeprom(uint32_t addr, uint8_t *buf, uint32_t size);
uint32_t twi_write_eeprom(uint32_t addr, uint8_t *buf, uint32_t size);
uint32_t twi_setpwm(uint8_t *values);
uint32_t twi_cmd(uint8_t addr, struct blmc_cmd *cmd);
void at91_twi_init(void);
void at91_twi_test(void);
#endif /*AT91TWI_H_*/