diff options
Diffstat (limited to 'board/gth')
| -rw-r--r-- | board/gth/ee_access.h | 16 | ||||
| -rw-r--r-- | board/gth/ee_dev.h | 85 |
2 files changed, 101 insertions, 0 deletions
diff --git a/board/gth/ee_access.h b/board/gth/ee_access.h new file mode 100644 index 0000000..e847f2c --- /dev/null +++ b/board/gth/ee_access.h @@ -0,0 +1,16 @@ +/* By Thomas.Lange@Corelatus.com 001025 + + Definitions for EEPROM/VOLT METER DS2438 */ + +#ifndef INCeeaccessh +#define INCeeaccessh + +int ee_do_command( u8 *Tx, int Tx_len, u8 *Rx, int Rx_len, int Send_skip ); +int ee_init_data(void); +int ee_crc_ok( u8 *Buffer, int Len, u8 Crc ); + +#ifndef TRUE +#define TRUE 1 +#endif + +#endif /* INCeeaccessh */ diff --git a/board/gth/ee_dev.h b/board/gth/ee_dev.h new file mode 100644 index 0000000..417c7b6 --- /dev/null +++ b/board/gth/ee_dev.h @@ -0,0 +1,85 @@ +/* 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 */ |