move boards to root folder

2014-03-12 17:18:50 +07:00
parent a7e14b4646
commit d98bc0a64b
45 changed files with 0 additions and 0 deletions
@@ -0,0 +1,195 @@
+/*****************************************************************************
+ *
+ *   Copyright(C) 2011, Embedded Artists AB
+ *   All rights reserved.
+ *
+ ******************************************************************************
+ * Software that is described herein is for illustrative purposes only
+ * which provides customers with programming information regarding the
+ * products. This software is supplied "AS IS" without any warranties.
+ * Embedded Artists AB assumes no responsibility or liability for the
+ * use of the software, conveys no license or title under any patent,
+ * copyright, or mask work right to the product. Embedded Artists AB
+ * reserves the right to make changes in the software without
+ * notification. Embedded Artists AB also make no representation or
+ * warranty that such application will be suitable for the specified
+ * use without further testing or modification.
+ *****************************************************************************/
+
+/*
+ * NOTE: I2C must have been initialized before calling any functions in this
+ * file.
+ */
+
+/******************************************************************************
+ * Includes
+ *****************************************************************************/
+
+#include <string.h>
+#include <stdio.h>
+#include "lpc_types.h"
+#include "lpc43xx_i2c.h"
+#include "base_eeprom.h"
+
+/******************************************************************************
+ * Defines and typedefs
+ *****************************************************************************/
+
+#define I2C_PORT (LPC_I2C0)
+
+#ifndef MIN
+#define MIN(x, y) ((x) < (y) ? (x) : (y))
+#endif
+
+#define EEPROM_I2C_ADDR    (0x57)
+
+#define EEPROM_PAGE_SIZE     32
+
+
+/******************************************************************************
+ * External global variables
+ *****************************************************************************/
+
+/******************************************************************************
+ * Local variables
+ *****************************************************************************/
+
+
+/******************************************************************************
+ * Local Functions
+ *****************************************************************************/
+
+static void eepromDelay(void)
+{
+  volatile int i = 0;
+  for (i = 0; i <0x20000; i++);
+}
+
+static Status I2CWrite(uint32_t addr, uint8_t* buf, uint32_t len) 
+{
+  I2C_M_SETUP_Type i2cData;
+
+	i2cData.sl_addr7bit = addr;
+	i2cData.tx_data = buf;
+	i2cData.tx_length = len;
+	i2cData.rx_data = NULL;
+	i2cData.rx_length = 0;
+	i2cData.retransmissions_max = 3;
+
+  return I2C_MasterTransferData(I2C_PORT, &i2cData, I2C_TRANSFER_POLLING);
+}
+
+static Status I2CRead(uint32_t addr, uint8_t* buf, uint32_t len) 
+{
+  I2C_M_SETUP_Type i2cData;
+
+	i2cData.sl_addr7bit = addr;
+	i2cData.tx_data = NULL;
+	i2cData.tx_length = 0;
+	i2cData.rx_data = buf;
+	i2cData.rx_length = len;
+	i2cData.retransmissions_max = 3;
+
+  return I2C_MasterTransferData(I2C_PORT, &i2cData, I2C_TRANSFER_POLLING);
+}
+
+/******************************************************************************
+ * Public Functions
+ *****************************************************************************/
+
+/******************************************************************************
+ *
+ * Description:
+ *    Initialize the EEPROM Driver
+ *
+ *****************************************************************************/
+void base_eeprom_init (void)
+{
+  I2C_Cmd(I2C_PORT, ENABLE);
+}
+
+/******************************************************************************
+ *
+ * Description:
+ *    Read from the EEPROM
+ *
+ * Params:
+ *   [in] buf - read buffer
+ *   [in] offset - offset to start to read from
+ *   [in] len - number of bytes to read
+ *
+ * Returns:
+ *   number of read bytes or -1 in case of an error
+ *
+ *****************************************************************************/
+int16_t base_eeprom_read(uint8_t* buf, uint16_t offset, uint16_t len)
+{
+  uint8_t addr = 0;
+  int i = 0;
+  uint8_t off[2];
+
+  if (len > BASE_EEPROM_TOTAL_SIZE || offset+len > BASE_EEPROM_TOTAL_SIZE) {
+    return -1;
+  }
+
+  addr = EEPROM_I2C_ADDR;
+  off[0] = ((offset >> 8) & 0xff);
+  off[1] = (offset & 0xff);
+
+  I2CWrite((addr << 1), off, 2);
+  for ( i = 0; i < 0x2000; i++);
+  I2CRead((addr << 1), buf, len);
+
+  return len;
+
+}
+
+/******************************************************************************
+ *
+ * Description:
+ *    Write to the EEPROM
+ *
+ * Params:
+ *   [in] buf - data to write
+ *   [in] offset - offset to start to write to
+ *   [in] len - number of bytes to write
+ *
+ * Returns:
+ *   number of written bytes or -1 in case of an error
+ *
+ *****************************************************************************/
+int16_t base_eeprom_write(uint8_t* buf, uint16_t offset, uint16_t len)
+{
+  uint8_t addr = 0;
+  int16_t written = 0;
+  uint16_t wLen = 0;
+  uint16_t off = offset;
+  uint8_t tmp[EEPROM_PAGE_SIZE+2];
+
+  if (len > BASE_EEPROM_TOTAL_SIZE || offset+len > BASE_EEPROM_TOTAL_SIZE) {
+    return -1;
+  }
+
+  addr = EEPROM_I2C_ADDR;
+
+  wLen = EEPROM_PAGE_SIZE - (off % EEPROM_PAGE_SIZE);
+  wLen = MIN(wLen, len);
+
+  while (len) {
+    tmp[0] = ((off >> 8) & 0xff);
+    tmp[1] = (off & 0xff);
+    memcpy(&tmp[2], (void*)&buf[written], wLen);
+    I2CWrite((addr << 1), tmp, wLen+2);
+
+    /* delay to wait for a write cycle */
+    eepromDelay();
+
+    len     -= wLen;
+    written += wLen;
+    off     += wLen;
+
+    wLen = MIN(EEPROM_PAGE_SIZE, len);
+  }
+
+  return written;
+}