Diff: main.cpp

Revision:

0:c40fe84a8d1f

Child:

1:bc3ce35be52a

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Tue Apr 16 11:56:19 2019 +0000
@@ -0,0 +1,47 @@
+/*
+ * Copyright (c) 2019 Nuvoton Tecnology Corp. All rights reserved.
+ *
+ * This example uses MAX31875 library to read Thermo 6 Click
+ * (MAX31875 temperature sensor) which placed on mikroBUS of
+ * Nuvoton NuMaker-IoT-M487 board.
+ *
+ */
+
+#include "mbed.h"
+#include "max31875.h"
+#include "max31875_cpp.h"
+
+/* Declare the I2C of mikroBUS on board */
+I2C mikro_i2c(PG_3, PG_2);
+
+/* Declare the MAX31875 sensor */
+MAX31875 temp_sensor(mikro_i2c, MAX31875_I2C_SLAVE_ADR_R0);
+
+int main()
+{
+    float f_temperature;
+
+    printf("\r\nmbed OS version is %d.\r\n", MBED_VERSION);
+    printf("Start to read temperature ...\r\n");
+
+    /* Set frequency of I2C bus to 1MHz */
+    mikro_i2c.frequency(1000000);
+    
+    /* Configure temperature sensor for 8 times per second */
+    temp_sensor.write_cfg(MAX31875_CFG_CONV_RATE_8 | MAX31875_CFG_RESOLUTION_12BIT);
+
+    while(true)
+    {
+        /* It should wait at least 1/8 seconds for next read */
+        //wait(MAX31875_WAIT_CONV_RATE_8);   
+        /* But to slow print out rate, wait 1 second here */
+        wait(1);
+
+        f_temperature = temp_sensor.read_reg_as_temperature(MAX31875_REG_TEMPERATURE);
+        printf("Temperature is %3.4f Celsius, %3.4f Fahrenheit\r\n",
+                f_temperature,
+                temp_sensor.celsius_to_fahrenheit(f_temperature));
+    }
+
+}
+