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
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+/*****************************************************************************
+ *
+ *   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"
+
+
+/******************************************************************************
+ * Defines and typedefs
+ *****************************************************************************/
+
+#define I2C_PORT (LPC_I2C0)
+
+#define LM75A_I2C_ADDR    (0x48)
+
+#define LM75A_CMD_TEMP 0x00
+
+#define I2CDEV LPC_I2C2
+
+
+/******************************************************************************
+ * External global variables
+ *****************************************************************************/
+
+/******************************************************************************
+ * Local variables
+ *****************************************************************************/
+
+
+/******************************************************************************
+ * Local Functions
+ *****************************************************************************/
+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 lm75a_init (void)
+{
+
+}
+
+/******************************************************************************
+ *
+ * Description:
+ *    Read the temperature
+ *
+ * Params: None
+ *
+ * Returns:
+ *   The measured temperature x 100, i.e. 26.50 degrees returned as 2650
+ *
+ *****************************************************************************/
+int32_t lm75a_readTemp(void)
+{
+    uint8_t temp[2];
+    int16_t t = 0;
+
+    I2CWrite(LM75A_I2C_ADDR, LM75A_CMD_TEMP, 1);
+    I2CRead(LM75A_I2C_ADDR, temp, 2);
+
+    /* 11 MSB bits used. Celcius is calculated as Temp data * 1/8 */
+    t = ((temp[0] << 8) | (temp[1]));
+
+    return ((t * 100) >> 8);
+
+}
+
+