| /* 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 *)CONFIG_SYS_IMMR)->im_cpm.cp_pbpar |
| #define PORT_B_ODR ((volatile immap_t *)CONFIG_SYS_IMMR)->im_cpm.cp_pbodr |
| #define PORT_B_DIR ((volatile immap_t *)CONFIG_SYS_IMMR)->im_cpm.cp_pbdir |
| #define PORT_B_DAT ((volatile immap_t *)CONFIG_SYS_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 */ |