Add date rtc i2c

7 files changed, 128 insertions, 10 deletions

diff --git a/include/cmd_mem.h b/include/cmd_mem.h
index cf379ce..1802338 100644
--- a/include/cmd_mem.h
+++ b/include/cmd_mem.h
@@ -1,8 +1,6 @@
 #ifndef CMD_MEM_H
 #define CMD_MEM_H
 
-//#include "common.h"
-
 #include "command.h"
 #include "cmd_mem.h"
 
diff --git a/include/common.h b/include/common.h
index a92f62c..e8879a6 100644
--- a/include/common.h
+++ b/include/common.h
@@ -43,19 +43,15 @@ void my_puts(const char *s)
 	fputs(s, stdout);
 }
 
-#ifdef __AVR__
 static inline 
 void my_puts_P(const char *s)
 {
+#ifdef __AVR__
 	fputs_P(s, stdout);
-}
-
 #else
-static inline
-void my_puts_P(const char *s)
-{
 	fputs(s, stdout);
-}
 #endif /* __AVR__ */
+}
+
 #endif /* COMMON_H */
 
diff --git a/include/config.h b/include/config.h
index 08d97bd..91b1fae 100644
--- a/include/config.h
+++ b/include/config.h
@@ -12,6 +12,12 @@
 //#define CONFIG_CMD_MEMTEST
 //#define CONFIG_MX_CYCLIC
 
+#define CONFIG_CMD_DATE 1
+
+#define CONFIG_SYS_I2C_RTC_ADDR	0x50
+#define CONFIG_SYS_I2C_BUFSIZE	64
+#define CONFIG_SYS_I2C_CLOCK	100000L		/* 100kHz */
+
 #define CONFIG_SYS_CBSIZE	250
 #define CONFIG_SYS_ENV_NAMELEN	16
 #define CONFIG_SYS_MAXARGS	8
diff --git a/include/crc.h b/include/crc.h
index c38bae4..927b5ff 100644
--- a/include/crc.h
+++ b/include/crc.h
@@ -1,12 +1,14 @@
 #ifndef CRC_H
 #define CRC_H
 
+#ifdef __AVR__
 #include <util/crc16.h>
-
 static inline
 uint16_t crc16(uint16_t crc, uint8_t data) 
 {
 	return _crc_ccitt_update(crc, data);
 }
+#else /* !__AVR__ */
+#endif /* __AVR__ */
 
 #endif /* CRC_H */
diff --git a/include/debug.h b/include/debug.h
index 7c19e40..8fdc830 100644
--- a/include/debug.h
+++ b/include/debug.h
@@ -3,7 +3,9 @@
 #define DEBUG_H_
 
 #include "common.h"
+#ifdef __AVR__
 #include <avr/pgmspace.h>
+#endif
 
 #ifdef DEBUG
 #define _DEBUG	1
@@ -31,6 +33,8 @@
 #endif /* 0 */
 
 
+void dump_eep(const uint8_t *addr, unsigned int len, char *title);
+void dump_ram(const uint8_t *addr, unsigned int len, char *title);
 void printfreelist(const char * title);
 
 
diff --git a/include/i2c.h b/include/i2c.h
new file mode 100644
index 0000000..50b1fd0
--- /dev/null
+++ b/include/i2c.h
@@ -0,0 +1,63 @@
+/*
+ * Copyright (C) 2009 Sergey Kubushyn <ksi@koi8.net>
+ * Copyright (C) 2009 - 2013 Heiko Schocher <hs@denx.de>
+ * Changes for multibus/multiadapter I2C support.
+ *
+ * (C) Copyright 2001
+ * Gerald Van Baren, Custom IDEAS, vanbaren@cideas.com.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ *
+ * The original I2C interface was
+ *   (C) 2000 by Paolo Scaffardi (arsenio@tin.it)
+ *   AIRVENT SAM s.p.a - RIMINI(ITALY)
+ * but has been changed substantially.
+ */
+
+#ifndef _I2C_H_
+#define _I2C_H_
+
+/*
+ * Configuration items.
+ */
+/* TODO: config.h? */
+#define I2C_RXTX_LEN	128	/* maximum tx/rx buffer length */
+
+
+/*
+ * Initialization, must be called once on start up, may be called
+ * repeatedly to change the speed.
+ */
+void i2c_init(uint32_t speed);
+
+/*
+ * Probe the given I2C chip address.  Returns 0 if a chip responded,
+ * not 0 on failure.
+ */
+int i2c_probe(uint8_t chip);
+
+/*
+ * Read/Write interface:
+ *   chip:    I2C chip address, range 0..127
+ *   addr:    Memory (register) address within the chip
+ *   alen:    Number of bytes to use for addr (typically 1, 2 for larger
+ *              memories, 0 for register type devices with only one
+ *              register)
+ *   buffer:  Where to read/write the data
+ *   len:     How many bytes to read/write
+ *
+ *   Returns: 0 on success, not 0 on failure
+ */
+int i2c_read(uint8_t chip, unsigned int addr, uint_fast8_t alen,
+				uint8_t *buffer, uint_fast8_t len);
+int i2c_write(uint8_t chip, unsigned int addr, uint_fast8_t alen,
+				uint8_t *buffer, uint_fast8_t len);
+
+/*
+ * Utility routines to read/write registers.
+ */
+uint8_t i2c_reg_read(uint8_t addr, uint8_t reg);
+
+void i2c_reg_write(uint8_t addr, uint8_t reg, uint8_t val);
+
+#endif /* _I2C_H_*/
diff --git a/include/rtc.h b/include/rtc.h
new file mode 100644
index 0000000..15215a9
--- /dev/null
+++ b/include/rtc.h
@@ -0,0 +1,49 @@
+/*
+ * (C) Copyright 2001
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+/*
+ * Generic RTC interface.
+ */
+#ifndef _RTC_H_
+#define _RTC_H_
+
+
+/*
+ * The struct used to pass data from the generic interface code to
+ * the hardware dependend low-level code ande vice versa. Identical
+ * to struct rtc_time used by the Linux kernel.
+ *
+ * Note that there are small but significant differences to the
+ * common "struct time":
+ *
+ *		struct time:		struct rtc_time:
+ * tm_mon	0 ... 11		1 ... 12
+ * tm_year	years since 1900	years since 0
+ */
+
+struct rtc_time {
+	int tm_sec;
+	int tm_min;
+	int tm_hour;
+	int tm_mday;
+	int tm_mon;
+	int tm_year;
+	int tm_wday;
+	int tm_yday;
+	int tm_isdst;
+};
+
+int rtc_get (struct rtc_time *);
+int rtc_set (struct rtc_time *);
+void rtc_reset (void);
+
+void GregorianDay (struct rtc_time *);
+void to_tm (unsigned long, struct rtc_time *);
+unsigned long mktime (unsigned int, unsigned int, unsigned int,
+		      unsigned int, unsigned int, unsigned int);
+
+#endif	/* _RTC_H_ */