mirror of
https://github.com/smaeul/u-boot.git
synced 2025-10-31 03:58:17 +00:00
86 lines
2.1 KiB
C
86 lines
2.1 KiB
C
/* By Thomas.Lange@Corelatus.com 001025
|
|
$Revision: 1.6 $
|
|
|
|
Definitions for EEPROM/VOLT METER DS2438
|
|
Copyright (C) 2000-2001 Corelatus AB */
|
|
|
|
#ifndef INCeedevh
|
|
#define INCeedevh
|
|
|
|
#define E_DEBUG(fmt,args...) if( Debug ) printk(KERN_DEBUG"EE: " fmt, ##args)
|
|
|
|
#define PORT_B_PAR ((volatile immap_t *)CFG_IMMR)->im_cpm.cp_pbpar
|
|
#define PORT_B_ODR ((volatile immap_t *)CFG_IMMR)->im_cpm.cp_pbodr
|
|
#define PORT_B_DIR ((volatile immap_t *)CFG_IMMR)->im_cpm.cp_pbdir
|
|
#define PORT_B_DAT ((volatile immap_t *)CFG_IMMR)->im_cpm.cp_pbdat
|
|
|
|
#define SET_PORT_B_INPUT(Mask) PORT_B_DIR &= ~(Mask)
|
|
#define SET_PORT_B_OUTPUT(Mask) PORT_B_DIR |= Mask
|
|
|
|
#define WRITE_PORT_B(Mask,Value) { \
|
|
if (Value) PORT_B_DAT |= Mask; \
|
|
else PORT_B_DAT &= ~(Mask); \
|
|
}
|
|
#define WRITE_PORT(Value) WRITE_PORT_B(PB_EEPROM,Value)
|
|
|
|
#define READ_PORT (PORT_B_DAT&PB_EEPROM)
|
|
|
|
/* 64 bytes chip */
|
|
#define EE_CHIP_SIZE 64
|
|
|
|
/* We use this resistor for measuring the current drain on 3.3V */
|
|
#define CURRENT_RESISTOR 0.022
|
|
|
|
/* microsecs
|
|
Pull line down at least this long for reset pulse */
|
|
#define RESET_LOW_TIME 490
|
|
|
|
/* Read presence pulse after we release reset pulse */
|
|
#define PRESENCE_TIMEOUT 100
|
|
#define PRESENCE_LOW_TIME 200
|
|
|
|
#define WRITE_0_LOW 80
|
|
#define WRITE_1_LOW 2
|
|
#define TOTAL_WRITE_LOW 80
|
|
|
|
#define READ_LOW 2
|
|
#define READ_TIMEOUT 10
|
|
#define TOTAL_READ_LOW 80
|
|
|
|
/*** Rom function commands ***/
|
|
#define READ_ROM 0x33
|
|
#define MATCH_ROM 0x55
|
|
#define SKIP_ROM 0xCC
|
|
#define SEARCH_ROM 0xF0
|
|
|
|
|
|
/*** Memory_command_function ***/
|
|
#define WRITE_SCRATCHPAD 0x4E
|
|
#define READ_SCRATCHPAD 0xBE
|
|
#define COPY_SCRATCHPAD 0x48
|
|
#define RECALL_MEMORY 0xB8
|
|
#define CONVERT_TEMP 0x44
|
|
#define CONVERT_VOLTAGE 0xB4
|
|
|
|
/* Chip is divided in 8 pages, 8 bytes each */
|
|
|
|
#define EE_PAGE_SIZE 8
|
|
|
|
/* All chip data we want are in page 0 */
|
|
|
|
/* Bytes in page 0 */
|
|
#define EE_P0_STATUS 0
|
|
#define EE_P0_TEMP_LSB 1
|
|
#define EE_P0_TEMP_MSB 2
|
|
#define EE_P0_VOLT_LSB 3
|
|
#define EE_P0_VOLT_MSB 4
|
|
#define EE_P0_CURRENT_LSB 5
|
|
#define EE_P0_CURRENT_MSB 6
|
|
|
|
|
|
/* 40 byte user data is located at page 3-7 */
|
|
#define EE_USER_PAGE_0 3
|
|
#define USER_PAGES 5
|
|
|
|
#endif /* INCeedevh */
|