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/* 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 */
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