Diff: main.cpp

Revision:

0:52c8f009b307

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Tue May 14 09:28:55 2019 +0000
@@ -0,0 +1,141 @@
+#include "mbed.h"
+
+uint8_t temp_offset = 0xFB;
+//uint8_t temp_offset = 0x00;
+uint8_t hum_offset = 0x00 ;
+
+Serial serial ( PA_9 , NC );
+
+// IES LEDs
+DigitalOut led1 ( PB_5 );
+DigitalOut led2 ( PB_2 );
+DigitalOut led3 ( PH_1 );
+
+DigitalIn pulse ( PA_2 );
+
+// I2C conf ( SDA , SCK )
+I2C i2c ( PB_9 , PB_8 );
+
+char i2c_data[1] = { 0 };
+char i2c_data2[2] = { 0 , 0 };
+char i2c_data4[4] = { 0 , 0 , 0 , 0 };
+
+const int i2c_addr_read  = 129;
+const int i2c_addr_write = 128;
+
+char conf_reg[1]        = { 0x0E };
+char meas_conf_reg[1]   = { 0x0F };
+char manf_id_low_reg[1] = { 0xFC };
+char temp_max_reg[1]    = { 0x05 };
+char temp_low_reg[1]        = { 0x00 };
+
+char conf_reg_init[2] = { 0x0F , 0x00 };
+char meas_conf_reg_init[2] = { 0x0F , 0x00 };
+char meas_conf_reg_reset[2] = { 0x0E , 0x80 };
+char meas_conf_reg_heat_on[2] = { 0x0E , 0x08 };
+char temp_offset_reg[2] = { 0x08 , temp_offset };
+
+char meas_conf_reg_meas[2] = { 0x0F , 0x01 }; // start_meas: 14bit, t&h , meas
+//char meas_conf_reg_meas[2] = { 0x0F , 0x51 }; // start_meas: 11bit, t&h , meas
+//char meas_conf_reg_meas[2] = { 0x0F , 0xA1 }; // start_meas: t_8bit, h_8bit , t&h , meas
+
+// HDC init
+void hdc_init ()
+{
+    serial .printf ( "\n\r" );
+    
+    //Konfiguracja startowa rejestrów
+    i2c.write ( i2c_addr_write , conf_reg_init , 2 , false );
+    i2c.write ( i2c_addr_write , meas_conf_reg_init , 2 , false );
+    
+    // Wdrożenie offsetu
+    i2c.write ( i2c_addr_write , temp_offset_reg , 2 , false );
+    
+    //Weryfikacja konfiguracji startowej rejestrów
+    i2c.write ( i2c_addr_write , conf_reg , 1 , true );
+    i2c.read ( i2c_addr_read , i2c_data , 1 , false );
+    serial .printf ( "0x0E Conf. reg.: %X\n\r" , i2c_data[0] );
+    i2c.write ( i2c_addr_write , meas_conf_reg , 1 , true );
+    i2c.read ( i2c_addr_read , i2c_data , 1 , false );
+    serial .printf ( "0x0F Meas conf. reg.: %X\n\r" , i2c_data[0] );
+    
+    // Weryfikacja adresu Manf. Id Low
+    i2c.write ( i2c_addr_write , manf_id_low_reg , 1 , true );
+    i2c.read ( i2c_addr_read , i2c_data , 1 , false );
+    serial .printf ( "HDC manf_id_low_reg: %X initiated\n\r" , i2c_data[0] );
+}
+
+void hdc_soft_reset ()
+{
+    serial .printf ( "\n\r" );
+    // Soft reset
+    i2c.write ( i2c_addr_write , meas_conf_reg_reset , 2 , false );
+    // Wait to perform reset
+    wait ( 1 );
+    serial .printf ( "Soft reset perfomed\n\r" );
+}
+
+void hdc_heater ( uint8_t t )
+{
+    serial .printf ( "\n\r" );
+    // Soft reset
+    i2c.write ( i2c_addr_write , meas_conf_reg_reset , 2 , false );
+    // Wait to perform reset
+    wait ( t );
+    serial .printf ( "Heater switched on for 5s\n\r" );
+}
+
+void hdc_single_acqusition ()
+{
+    i2c.write ( i2c_addr_write , meas_conf_reg_meas , 2 , false );
+    wait ( 0.2 );
+    i2c.write ( i2c_addr_write , temp_low_reg , 1 , true );
+    i2c.read ( i2c_addr_read , i2c_data4 , 4 , false );
+    //serial .printf ( "HDC Single acquisition raw[hex] 3-0: %X , %X , %X , %X \n\r" , i2c_data4[3] , i2c_data4[2] , i2c_data4[1] , i2c_data4[0] );
+    double temp = ( i2c_data4 [1] << 8 ) + i2c_data4 [0];
+    temp = ( ( temp * 165 ) / 65536 ) - 40 ;
+    serial .printf ( "temp: %f\n\r" , temp );
+}
+
+void hdc_temp_max ()
+{
+    i2c.write ( i2c_addr_write , temp_max_reg , 1 , true );
+    i2c.read ( i2c_addr_read , i2c_data , 1 , false );
+    //serial .printf ( "HDC Max temp. raw[hex]: %X\n\r" , i2c_data [0] );
+    double temp = i2c_data [0];
+    temp = ( ( temp * 165 ) / 256 ) - 40 ;
+    serial .printf ( "HDC Max temp. = %f\n\r" , temp );
+}
+
+// Toggle LED
+void toggle_led ()
+{
+    serial .printf ( "led toggle\n\r" );
+    led1 = !led1;
+    led3 = !led2;
+    led3 = !led3;
+}
+
+int main() {
+
+    led1 = 0;
+    led2 = 0;
+    led3 = 0;
+    
+    i2c.frequency ( 1000000 );
+    
+    hdc_init () ;
+    //hdc_soft_reset () ;
+    //hdc_heater ( 5 );
+    //hdc_init () ;
+
+    while ( 1 )
+    {
+        for ( int i = 0 ; i < 10 ; i++ )
+        {
+            hdc_single_acqusition () ;
+            wait ( 10 ) ;
+        }
+        hdc_temp_max () ;
+    }
+}