Revision 4:1afe75848f10, committed 2020-02-13

Comitter:

brunnobbco

Date:

Thu Feb 13 19:48:14 2020 +0000

Parent:

3:50c27e4261e2

Commit message:

Teste ADC Coragem

Changed in this revision

--- a/main.cpp	Tue Feb 07 08:55:05 2017 +0000
+++ b/main.cpp	Thu Feb 13 19:48:14 2020 +0000
@@ -1,98 +1,96 @@
 #include "mbed.h"
 
-//DigitalOut led1(LED1);
-DigitalOut led1(P0_13); //nRF52840 PDK io
-DigitalOut led2(P0_14);
-DigitalOut led3(P0_15);
-DigitalOut led4(P0_16);
-
+#define MIN_BATTERY_ADC_VALUE (int16_t)3071    //(min_voltage_on_analog_pin *4551) 2.48*4551 = 11295
+#define MAX_BATTERY_ADC_VALUE (int16_t)4095    //(max_voltage_on_analog_pin *4551) 3.38*4551 = 15391
 
-InterruptIn button1(P0_11);//(USER_BUTTON nRF52840 PDK);
-InterruptIn button2(P0_12);
-InterruptIn button3(P0_24);
-InterruptIn button4(P0_25);
-
-void button1_pressed()
-{
-  led1 = led2 =led3 =led4 = 1;
-  led1 = 0;
-  
-}
+//AnalogIn analog_value(P0_2);
+//DigitalOut led(P1_13);
 
-void button1_released()
-{
-  led1 = led2 =led3 =led4 = 1;
-  //led1 = 0;
-}
-
-void button2_pressed()
-{
-  led1 = led2 =led3 =led4 = 1;
-  led2 = 0;
-  
-}
-
-void button2_released()
-{
-  led1 = led2 =led3 =led4 = 1;
-  //led1 = 0;
-}
-
-void button3_pressed()
-{
-  led1 = led2 =led3 =led4 = 1;
-  led3 = 0;
- // wait(0.1);
+void config_adc(void){
+    
+    //Configure SAADC singled-ended channel, Internal reference (0.6V) and 1/5 gain.
+    NRF_SAADC->CH[0].CONFIG = (SAADC_CH_CONFIG_GAIN_Gain1_5    << SAADC_CH_CONFIG_GAIN_Pos) |
+            (SAADC_CH_CONFIG_MODE_SE         << SAADC_CH_CONFIG_MODE_Pos) |
+            (SAADC_CH_CONFIG_REFSEL_Internal << SAADC_CH_CONFIG_REFSEL_Pos) |
+            (SAADC_CH_CONFIG_RESN_Bypass     << SAADC_CH_CONFIG_RESN_Pos) |
+            (SAADC_CH_CONFIG_RESP_Bypass     << SAADC_CH_CONFIG_RESP_Pos) |
+            (SAADC_CH_CONFIG_TACQ_10us        << SAADC_CH_CONFIG_TACQ_Pos);
+            
+    
+    // Configure the SAADC channel with VDD as a positive input, no negative input(single ended).
+    NRF_SAADC->CH[0].PSELP = SAADC_CH_PSELN_PSELN_AnalogInput0 << SAADC_CH_PSELN_PSELN_Pos ;//changed pin number to AIN7
+    NRF_SAADC->CH[0].PSELN = SAADC_CH_PSELN_PSELN_NC << SAADC_CH_PSELN_PSELN_Pos;
+    
+    //Configure the SAADC resolution.
+    NRF_SAADC->RESOLUTION = SAADC_RESOLUTION_VAL_12bit << SAADC_RESOLUTION_VAL_Pos;
+    
+    // No automatic sampling, will trigger with TASKS_SAMPLE.
+    NRF_SAADC->SAMPLERATE = SAADC_SAMPLERATE_MODE_Task << SAADC_SAMPLERATE_MODE_Pos;
+    
+    //Enable SAADC (would capture analog pins if they were used in CH[0].PSELP)
+    NRF_SAADC->ENABLE = SAADC_ENABLE_ENABLE_Enabled << SAADC_ENABLE_ENABLE_Pos;
 }
 
-void button3_released()
-{
-  led1 = led2 =led3 =led4 = 1;
-  //led1 = 0;
-}
+float battery_status(void){
+
+    int16_t result = 0;
+    float precise_result = 0;
+
+    // Configure result to be put in RAM at the location of "result" variable.
+    NRF_SAADC->RESULT.MAXCNT = 1;
+    NRF_SAADC->RESULT.PTR = (uint32_t)&result;
 
-void button4_pressed()
-{
-  led1 = led2 =led3 =led4 = 1;
-  led4 = 0;
-  
-}
-
-void button4_released()
-{
-  led1 = led2 =led3 =led4 = 1;
-  //led1 = 0;
-}
+    // Calibrate the SAADC (only needs to be done once in a while)
+    NRF_SAADC->TASKS_CALIBRATEOFFSET = 1;
+    while (NRF_SAADC->EVENTS_CALIBRATEDONE == 0);
+    NRF_SAADC->EVENTS_CALIBRATEDONE = 0;
+    
+    // Start the SAADC and wait for the started event.
+    NRF_SAADC->TASKS_START = 1;
+    while (NRF_SAADC->EVENTS_STARTED == 0);
+    NRF_SAADC->EVENTS_STARTED = 0;
+    
+    // Do a SAADC sample, will put the result in the configured RAM buffer.
+    NRF_SAADC->TASKS_SAMPLE = 1;
+    while (NRF_SAADC->EVENTS_END == 0);
+    NRF_SAADC->EVENTS_END = 0;
+    
+    precise_result = (float)(result/4551);
+    
+    // Stop the SAADC, since it's not used anymore.
+    NRF_SAADC->TASKS_STOP = 1;
+    while (NRF_SAADC->EVENTS_STOPPED == 0);
+    NRF_SAADC->EVENTS_STOPPED = 0;
+    NVIC_ClearPendingIRQ(SAADC_IRQn);
+    return precise_result;
+} 
 
 
-// main() runs in its own thread in the OS
-// (note the calls to Thread::wait below for delays)
+int main()
+{
 
-int main() {
-    led1 = led2 =led3 =led4 = 0;
+    config_adc();
+    float result_1;
     
-    button1.fall(&button1_pressed);
-    button1.rise(&button1_released);
+    printf("\nAnalogIn example\n");
     
-    button2.fall(&button2_pressed);
-    button2.rise(&button2_released);
+    while(1) {
 
-    button3.fall(&button3_pressed);
-    button3.rise(&button3_released);
-
-    button4.fall(&button4_pressed);
-    button4.rise(&button4_released);
+//        meas_r = analog_value.read(); // Read the analog input value (value from 0.0 to 1.0 = full ADC conversion range)
+//        meas_v = meas_r * 3300; // Converts value in the 0V-3.3V range
+        
+        // Display values
+//        printf("measure = %f = %.0f mV\n", meas_r, meas_v);
 
-    
-    while (true) {
-   //     led1 = !led1;
-   //     wait(0.5);
-   //     led2 = !led2;
-   //     wait(0.5);
-   //     led3 = !led3;
-   //     wait(0.5);
-   //     led4 = !led4;
-   //     wait(0.5);
+        // LED is ON is the value is below 1V
+//        if (meas_v < 1000) {
+//            led = 1; // LED ON
+//        } else {
+//            led = 0; // LED OFF
+//        }
+//        printf("debug before bat_status routine");
+        result_1=battery_status();
+        printf("bat_lev: \n%f\n", result_1);
+        wait(1.0); // 1 second
     }
 }
-

--- a/mbed-os.lib	Tue Feb 07 08:55:05 2017 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,1 +0,0 @@
-https://github.com/ARMmbed/mbed-os/#269f58d75b752a4e67a6a2d8c5c698635ffd6752

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed_app.json	Thu Feb 13 19:48:14 2020 +0000
@@ -0,0 +1,31 @@
+{  
+    
+    "target_overrides": {
+        "K64F": {
+            "target.features_add": ["BLE"],
+            "target.extra_labels_add": ["CORDIO", "CORDIO_BLUENRG"]
+        },
+        "NUCLEO_F401RE": {
+            "target.features_add": ["BLE"],
+            "target.extra_labels_add": ["CORDIO", "CORDIO_BLUENRG"]
+        },
+        "DISCO_L475VG_IOT01A": {
+            "target.features_add": ["BLE"],
+            "target.extra_labels_add": ["CORDIO", "CORDIO_BLUENRG"]
+        },
+        "NRF52840_DK": {
+            "target.features_add": ["BLE"],
+            "target.extra_labels_add": ["CORDIO", "CORDIO_LL", "SOFTDEVICE_N ONE", "NORDIC_CORDIO"],
+            "target.extra_labels_remove": ["SOFTDEVICE_COMMON", "SOFTDEVICE_S140_FULL", "NORDIC_SOFTDEVICE"],           
+            "target.lf_clock_src": "NRF_LF_SRC_RC",
+            "target.lf_clock_rc_calib_timer_interval": 16,
+            "target.lf_clock_rc_calib_mode_config": 2
+            
+        },
+        "NRF52_DK": {
+            "target.features_add": ["BLE"],
+            "target.extra_labels_add": ["CORDIO", "CORDIO_LL", "SOFTDEVICE_NONE", "NORDIC_CORDIO"],
+            "target.extra_labels_remove": ["SOFTDEVICE_COMMON", "SOFTDEVICE_S132_FULL", "NORDIC_SOFTDEVICE"]
+        }
+    }
+}
\ No newline at end of file

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed_coragem.lib	Thu Feb 13 19:48:14 2020 +0000
@@ -0,0 +1,1 @@
+https://github.com/leiachewbacca/mbed_coragem.git/#b8dad0652c9cd2321126a590280a18a964e1eed0