Initial revision

1 files changed, 85 insertions, 0 deletions

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 */