Diff: main.cpp

Revision:

0:3e9f9b3ed7c8

Child:

1:f0cd9010cf47

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Wed May 11 18:29:00 2016 +0000
@@ -0,0 +1,164 @@
+
+#include "mbed.h"
+#include "nrf51.h"
+#include "nrf51_bitfields.h"
+#include <string>
+
+#include "BLE.h"
+#include "DFUService.h"
+#include "UARTService.h"
+
+#define LED_GREEN   p21
+#define LED_RED     p22
+#define LED_BLUE    p23
+#define BUTTON_PIN  p17
+#define BATTERY_PIN p1
+
+#define UART_TX     p9
+#define UART_RX     p11
+#define UART_CTS    p8
+#define UART_RTS    p10
+
+InterruptIn button(BUTTON_PIN);
+AnalogIn    battery(BATTERY_PIN);
+
+
+
+int read_none_count = 0;
+
+BLEDevice  ble;
+UARTService *uartServicePtr;
+
+volatile bool bleIsConnected = false;
+volatile uint8_t tick_event = 0;
+
+
+
+void connectionCallback(const Gap::ConnectionCallbackParams_t *params)
+{
+    bleIsConnected = true;
+}
+
+void disconnectionCallback(const Gap::DisconnectionCallbackParams_t *cbParams)
+{
+    ble.startAdvertising();
+    bleIsConnected = false;
+}
+
+void detect(void)
+{
+    //LOG("Button pressed\n");  
+    //blue = !blue;
+}
+
+void led_init(void)
+{
+      
+//set LED pins to digital output
+NRF_GPIO->PIN_CNF[LED_BLUE] = (GPIO_PIN_CNF_SENSE_Disabled << GPIO_PIN_CNF_SENSE_Pos)
+                             | (GPIO_PIN_CNF_DRIVE_S0S1 << GPIO_PIN_CNF_DRIVE_Pos)
+                             | (GPIO_PIN_CNF_PULL_Disabled << GPIO_PIN_CNF_PULL_Pos)
+                             | (GPIO_PIN_CNF_INPUT_Disconnect << GPIO_PIN_CNF_INPUT_Pos)
+                             | (GPIO_PIN_CNF_DIR_Output << GPIO_PIN_CNF_DIR_Pos);
+
+NRF_GPIO->PIN_CNF[LED_GREEN] = (GPIO_PIN_CNF_SENSE_Disabled << GPIO_PIN_CNF_SENSE_Pos)
+                             | (GPIO_PIN_CNF_DRIVE_S0S1 << GPIO_PIN_CNF_DRIVE_Pos)
+                             | (GPIO_PIN_CNF_PULL_Disabled << GPIO_PIN_CNF_PULL_Pos)
+                             | (GPIO_PIN_CNF_INPUT_Disconnect << GPIO_PIN_CNF_INPUT_Pos)
+                             | (GPIO_PIN_CNF_DIR_Output << GPIO_PIN_CNF_DIR_Pos);
+                             
+NRF_GPIO->PIN_CNF[LED_RED] = (GPIO_PIN_CNF_SENSE_Disabled << GPIO_PIN_CNF_SENSE_Pos)
+                             | (GPIO_PIN_CNF_DRIVE_S0S1 << GPIO_PIN_CNF_DRIVE_Pos)
+                             | (GPIO_PIN_CNF_PULL_Disabled << GPIO_PIN_CNF_PULL_Pos)
+                             | (GPIO_PIN_CNF_INPUT_Disconnect << GPIO_PIN_CNF_INPUT_Pos)
+                             | (GPIO_PIN_CNF_DIR_Output << GPIO_PIN_CNF_DIR_Pos);                            
+// NRF_GPIO - #define NRF_GPIO                        ((NRF_GPIO_Type           *) NRF_GPIO_BASE)
+//   NRF_GPIO_Type - struct containing possible settings  (DIR, INPUT, PULL, DRIVE, SENSE, as well as PIN_CNF[] (configuration array for all 32 outputs)
+//   NRF_GPIO_BASE - #define NRF_GPIO_BASE                   0x50000000UL  //base register address for GPIO settings
+// -> just a way of accessing PIN_CNF[pin_we_want_to_mess_with], object oriented programming stuff
+// GPIO_PIN_CNF_SENSE_Disabled   //the appropriate binary value to set sense as disabled
+// <<                            //bit shift
+// GPIO_PIN_CNF_SENSE_pos        //position that the value of GPIO_PIN_CNF_SENSE_Disabled should be placed at
+// | //OR all of these values together to set the register
+}
+    
+
+int main(void)
+{
+  
+    led_init();
+    
+    //Turn all LEDs off
+    NRF_GPIO->OUTSET = (1UL << LED_BLUE); //remember that writing zeros with outset and outclear has no effect
+    NRF_GPIO->OUTSET = (1UL << LED_RED); 
+    NRF_GPIO->OUTSET = (1UL << LED_GREEN); 
+        
+    wait(1);
+    
+    button.fall(detect);
+
+    //Initialising the nRF51822
+    ble.init();
+    ble.gap().onDisconnection(disconnectionCallback);
+    ble.gap().onConnection(connectionCallback);
+
+
+    /* setup advertising */
+    ble.accumulateAdvertisingPayload(GapAdvertisingData::BREDR_NOT_SUPPORTED);
+    ble.setAdvertisingType(GapAdvertisingParams::ADV_CONNECTABLE_UNDIRECTED);
+    ble.accumulateAdvertisingPayload(GapAdvertisingData::SHORTENED_LOCAL_NAME,
+                                     (const uint8_t *)"PWMtest", sizeof("PWMtest"));
+    ble.accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LIST_128BIT_SERVICE_IDS,
+                                     (const uint8_t *)UARTServiceUUID_reversed, sizeof(UARTServiceUUID_reversed));
+    DFUService dfu(ble);                                 
+    UARTService uartService(ble);
+    uartServicePtr = &uartService;
+    //uartService.retargetStdout();
+
+    ble.setAdvertisingInterval(160); /* 100ms; in multiples of 0.625ms. */
+    ble.gap().startAdvertising();
+    char str[8];
+    str[5]='\r';
+    str[6]='\n';
+    str[7]='\0';
+    
+    //int rgb_res = 8; //RGB resolution, TODO define this as a constant later
+    int vals[3] = {0};
+    bool pwmvals[3] = {0};
+    
+    
+    while (true) {
+        ble.waitForEvent();
+        str[0]=uartService._getc();//set
+        if (str[0]=='S')
+        {
+            
+            str[1]=uartService._getc();//R
+            str[2]=uartService._getc();//G
+            str[3]=uartService._getc();//B
+            str[4]=uartService._getc();
+            
+            vals[0] = str[1]-0x30;//convert from char to int
+            vals[1] = str[2]-0x30;
+            vals[2] = str[3]-0x30;
+            uartService.writeString(str);
+            
+            str[0] = 0;
+        }
+        
+        for(uint32_t j = 100000; j>0; j--)//display color for a couple seconds
+        {
+            for(int i = 8; i>0; i--)//
+            {
+                pwmvals[0] = (i - vals[0] == 0);//control brightness by turning LED on after x iterations
+                pwmvals[1] = (i - vals[1] == 0);//could compare directly to str and save an array
+                pwmvals[2] = (i - vals[2] == 0);
+                NRF_GPIO->OUTCLR = (pwmvals[0] << LED_RED)|(pwmvals[1] << LED_GREEN)|(pwmvals[2] << LED_BLUE);
+                
+            }
+            NRF_GPIO->OUTSET = (0x7UL << LED_GREEN);//turn all 3 off
+        }
+    }
+}
+
+