Revision 0:63996d24973b, committed 2016-11-07

Comitter:

adisuciu

Date:

Mon Nov 07 15:46:14 2016 +0000

Commit message:

Initial revision

Changed in this revision

diff -r 000000000000 -r 63996d24973b ADT7310.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ADT7310.cpp	Mon Nov 07 15:46:14 2016 +0000
@@ -0,0 +1,75 @@
+#include "ADT7310.h"
+
+
+ADT7310::ADT7310(PinName CS, PinName MOSI, PinName MISO, PinName SCK) :/* miso(MISO),*/ adt7310(MOSI, MISO, SCK), cs(CS)
+{
+    cs = true;
+    adt7310.format(8, SPI_MODE);
+}
+
+void ADT7310::reset()
+{
+    cs = false;
+    adt7310.write(0xff);
+    adt7310.write(0xff);
+    adt7310.write(0xff);
+    adt7310.write(0xff);
+    cs = true;
+}
+uint8_t ADT7310::read_status()
+{
+    uint8_t spi_data[2] = {ADT7310_READ | (ADT7310_STATUS << 3), ADT7310_DUMMY};
+    spi_read(spi_data, 2);
+    return spi_data[1];
+}
+
+void ADT7310::start_single_conversion()
+{
+    uint8_t spi_data[2] = {ADT7310_READ | (ADT7310_CONFIG << 3), ADT7310_DUMMY};
+    spi_read(spi_data, 2);
+    spi_data[0] = ADT7310_WRITE | (ADT7310_CONFIG << 3);
+    spi_data[1] = (spi_data[1] & (~(0x60))) |  (0x20); // Oneshot conversion
+    spi_write(spi_data, 2);
+}
+void ADT7310::write_config(uint8_t data)
+{
+    uint8_t spi_data[2] = {ADT7310_WRITE | (ADT7310_CONFIG << 3), data};
+    spi_write(spi_data, 2);
+}
+
+uint8_t ADT7310::read_config()
+{
+    uint8_t spi_data[2] = {ADT7310_READ | (ADT7310_CONFIG << 3), ADT7310_DUMMY};
+    spi_read(spi_data, 2);
+    return spi_data[1];
+}
+uint16_t ADT7310::read_temp()
+{
+    uint8_t spi_data[3] = {ADT7310_READ | (ADT7310_TEMP << 3), ADT7310_DUMMY, ADT7310_DUMMY };
+    spi_read(spi_data, 3);
+    return ((static_cast<uint16_t>(spi_data[1]) << 8) | spi_data[2]);
+}
+void ADT7310::write_temp_setpoint(uint8_t setpoint, uint16_t data)
+{
+    uint8_t spi_data[3] = {ADT7310_WRITE | (setpoint << 3), ((data & 0xff00) >> 8), data & 0xff };
+    spi_write(spi_data, 3);
+}
+
+void ADT7310::spi_write(uint8_t *data, uint8_t size)
+{
+    cs = false;
+    uint8_t i;
+    for(i = 0; i < size; i++)
+        adt7310.write(data[i]);
+    cs = true;
+
+}
+void ADT7310::spi_read(uint8_t *data, uint8_t size)
+{
+    cs = false;
+    uint8_t i;
+    for(i = 0; i < size; i++)
+        data[i] = adt7310.write(data[i]);
+
+    cs = true;
+}

diff -r 000000000000 -r 63996d24973b ADT7310.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ADT7310.h	Mon Nov 07 15:46:14 2016 +0000
@@ -0,0 +1,87 @@
+
+#ifndef ADT7310_H
+#define ADT7310_H
+
+#include "mbed.h"
+
+/**
+ * @brief Analog Devices ADT7310 temperature sensor
+ */
+class ADT7310
+{
+public:
+
+
+#define ADT7310_READ (1<<6)
+#define ADT7310_WRITE (0)
+#define ADT7310_DUMMY (0)
+#define ADT7310_STATUS (0)
+#define ADT7310_CONFIG (1)
+#define ADT7310_TEMP  (2)
+#define ADT7310_ID    (3)
+#define ADT7310_TCRIT (4)
+#define ADT7310_THYST (5)
+#define ADT7310_THIGH (6)
+#define ADT7310_TLOW  (7)
+
+
+	/**
+	 * @brief ADT7310 class
+	 * @param CS - chipselect pin
+	 * @param MOSI - MOSI pin
+	 * @param MISO - MISO pin
+	 * @param SCK - Clock pin
+	 */
+    ADT7310(PinName CS = SPI_CS, PinName MOSI = SPI_MOSI, PinName MISO = SPI_MISO, PinName SCK = SPI_SCK);
+
+    /**
+     * @brief resets the ADT7310
+     */
+    void reset();
+
+    /**
+     * @brief reads status register of the temperature sensor
+     * @return value of the status register
+     */
+    uint8_t read_status();
+
+    /**
+     * @brief writes configuration register of the temperature sensor
+     * @param data - data to be written
+     */
+    void write_config(uint8_t data);
+
+    /**
+     * @brief issues a conversion to the temperature sensor
+     */
+    void start_single_conversion();
+
+    /**
+     * @brief reads configuration register
+     * @return configuration register value
+     */
+    uint8_t read_config();
+
+    /**
+     * @brief reads the temperature
+     * @return temperature
+     */
+    uint16_t read_temp();
+
+    /**
+     * @brief writes temperature setpoints
+     * @param setpoint - setpoint register
+     * @param data - data to be written to the setpoint register
+     */
+    void write_temp_setpoint(uint8_t setpoint, uint16_t data);
+
+    void spi_write(uint8_t *data, uint8_t size);
+    void spi_read(uint8_t *data, uint8_t size);
+    //DigitalIn miso;
+    DigitalOut cs;
+    SPI adt7310;
+private:
+    const uint8_t SPI_MODE = 0x03;
+};
+
+#endif