Cataract Gemuese / Mbed 2 deprecated sose2016_BLE_Board

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Dependencies:   BLE_API mbed nRF51822

Fork of EmtpyProgram by Cataract Gemuese

main.cpp@1:115afdfbaa84, 2016-07-12 (annotated)

Committer:
Cataract
Date:
Tue Jul 12 14:35:09 2016 +0000
Revision:
1:115afdfbaa84
Parent:
0:4817f7301801
Child:
2:343f39defab2
sorry for no commits :(

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Cataract 0:4817f7301801 1 #include "mbed.h"
Cataract 0:4817f7301801 2 #include "ble/BLE.h"
Cataract 0:4817f7301801 3 #include "ble/UUID.h"
Cataract 0:4817f7301801 4 #include "ble/GattAttribute.h"
Cataract 0:4817f7301801 5 #include "ble/GattService.h"
Cataract 0:4817f7301801 6
Cataract 0:4817f7301801 7 DigitalOut alivenessLED(LED1, 0);
Cataract 0:4817f7301801 8 DigitalOut alivenessLED2(LED2, 1);
Cataract 0:4817f7301801 9 DigitalOut alivenessLED3(LED3, 1);
Cataract 1:115afdfbaa84 10 DigitalOut alivenessLED4(LED4, 1);
Cataract 0:4817f7301801 11
Cataract 0:4817f7301801 12 Ticker ticker;
Cataract 0:4817f7301801 13
Cataract 0:4817f7301801 14 const static char DEVICE_NAME[] = "KeyOpener3k";
Cataract 0:4817f7301801 15 static const char * uuid16_list[] = {"9085495d-f273-443d-9e37-e27c9194f63b"};
Cataract 0:4817f7301801 16
Cataract 0:4817f7301801 17 Serial pc(USBTX, USBRX);
Cataract 0:4817f7301801 18
Cataract 1:115afdfbaa84 19 SPI device(P0_14,P0_13,P0_15);
Cataract 1:115afdfbaa84 20 DigitalOut cs(P0_12);
Cataract 1:115afdfbaa84 21
Cataract 1:115afdfbaa84 22 char * message;
Cataract 1:115afdfbaa84 23 char * cpy = (char*) malloc(21);
Cataract 1:115afdfbaa84 24
Cataract 1:115afdfbaa84 25 void sendToken()
Cataract 1:115afdfbaa84 26 {
Cataract 1:115afdfbaa84 27 pc.printf("Token");
Cataract 1:115afdfbaa84 28 alivenessLED4 = !alivenessLED4;
Cataract 1:115afdfbaa84 29
Cataract 1:115afdfbaa84 30 //init SPI
Cataract 1:115afdfbaa84 31 cs = 1;
Cataract 1:115afdfbaa84 32 device.format(8,3);
Cataract 1:115afdfbaa84 33 device.frequency(2000000);
Cataract 1:115afdfbaa84 34
Cataract 1:115afdfbaa84 35 int len = strlen(message);
Cataract 1:115afdfbaa84 36
Cataract 1:115afdfbaa84 37 // Write the length of the message
Cataract 1:115afdfbaa84 38 cs = 0;
Cataract 1:115afdfbaa84 39 device.write( *((char*) (&len)) );
Cataract 1:115afdfbaa84 40 device.write( *((char*) (&len)+1) );
Cataract 1:115afdfbaa84 41 device.write( *((char*) (&len)+2) );
Cataract 1:115afdfbaa84 42 device.write( *((char*) (&len)+3) );
Cataract 1:115afdfbaa84 43 cs = 1;
Cataract 1:115afdfbaa84 44
Cataract 1:115afdfbaa84 45 // Write the message
Cataract 1:115afdfbaa84 46 for(int i=0;i<len;i++){
Cataract 1:115afdfbaa84 47 cs = 0;
Cataract 1:115afdfbaa84 48 device.write(*(message+i));
Cataract 1:115afdfbaa84 49 cs = 1;
Cataract 1:115afdfbaa84 50 }
Cataract 1:115afdfbaa84 51
Cataract 1:115afdfbaa84 52 // Free Memory
Cataract 1:115afdfbaa84 53 free(message);
Cataract 1:115afdfbaa84 54
Cataract 1:115afdfbaa84 55 // Reset board to unblock the BLE-connection
Cataract 1:115afdfbaa84 56 NVIC_SystemReset();
Cataract 1:115afdfbaa84 57 }
Cataract 1:115afdfbaa84 58
Cataract 1:115afdfbaa84 59 uint32_t countdata = 0; // Number of 20-byte blocks to be written.
Cataract 1:115afdfbaa84 60
Cataract 1:115afdfbaa84 61
Cataract 1:115afdfbaa84 62 // Callback for the BLE connection
Cataract 1:115afdfbaa84 63 void onDataWrittenCallback(const GattWriteCallbackParams* params)
Cataract 1:115afdfbaa84 64 {
Cataract 1:115afdfbaa84 65 pc.printf("read");
Cataract 1:115afdfbaa84 66 alivenessLED3 = !alivenessLED3;
Cataract 1:115afdfbaa84 67 // if countdata == 0 the data will be interpretated as the Number of 20-byte blocks to be written.
Cataract 1:115afdfbaa84 68 if (countdata == 0){
Cataract 1:115afdfbaa84 69
Cataract 1:115afdfbaa84 70 pc.printf("%u\r\n",*(uint32_t *) params->data);
Cataract 1:115afdfbaa84 71
Cataract 1:115afdfbaa84 72 countdata = *(uint32_t *) params->data;
Cataract 1:115afdfbaa84 73
Cataract 1:115afdfbaa84 74 //Malloc the size of the data to be written. +1 for the 0x00 byte.
Cataract 1:115afdfbaa84 75 message = (char*) malloc(sizeof(char)*20*countdata + 1);
Cataract 1:115afdfbaa84 76 } else {
Cataract 1:115afdfbaa84 77
Cataract 1:115afdfbaa84 78 //If countdata is set the data will be interpretated as a string and concatenated to the previously recieved message
Cataract 1:115afdfbaa84 79 pc.printf("Data: %s\r\n %d",params->data,countdata);
Cataract 1:115afdfbaa84 80 memcpy(cpy, params->data, 20);
Cataract 1:115afdfbaa84 81 cpy[20] = '\0';
Cataract 1:115afdfbaa84 82 strcat(message,cpy);
Cataract 1:115afdfbaa84 83 countdata--;
Cataract 1:115afdfbaa84 84
Cataract 1:115afdfbaa84 85 // if every block was send over BLE send the token via SPI to the other board.
Cataract 1:115afdfbaa84 86 if (countdata == 0){
Cataract 1:115afdfbaa84 87 sendToken();
Cataract 1:115afdfbaa84 88 }
Cataract 1:115afdfbaa84 89 }
Cataract 1:115afdfbaa84 90 }
Cataract 1:115afdfbaa84 91
Cataract 0:4817f7301801 92 void periodicCallback(void)
Cataract 0:4817f7301801 93 {
Cataract 0:4817f7301801 94 alivenessLED = !alivenessLED; /* Do blinky on LED1 to indicate system aliveness. */
Cataract 0:4817f7301801 95 }
Cataract 0:4817f7301801 96
Cataract 1:115afdfbaa84 97 //Write the "reset" byte to the other board and reset
Cataract 1:115afdfbaa84 98 void resetCallback(void)
Cataract 1:115afdfbaa84 99 {
Cataract 1:115afdfbaa84 100 cs = 0;
Cataract 1:115afdfbaa84 101 device.write( 0x11 );
Cataract 1:115afdfbaa84 102 cs = 1;
Cataract 1:115afdfbaa84 103 NVIC_SystemReset();
Cataract 0:4817f7301801 104 }
Cataract 0:4817f7301801 105
Cataract 1:115afdfbaa84 106 void connectionCallback(const Gap::ConnectionCallbackParams_t *params)
Cataract 1:115afdfbaa84 107 {
Cataract 1:115afdfbaa84 108 // Start a timer for autoreset to "unblock" the board automaticly
Cataract 1:115afdfbaa84 109 // after a bad connection
Cataract 1:115afdfbaa84 110 ticker.attach(resetCallback,30);
Cataract 0:4817f7301801 111 alivenessLED2 = !alivenessLED2;
Cataract 0:4817f7301801 112 pc.printf("Connected!\r\n");
Cataract 0:4817f7301801 113 }
Cataract 0:4817f7301801 114
Cataract 1:115afdfbaa84 115 UUID uuid = UUID("9085495d-f273-443d-9e37-e27c9194f63b");
Cataract 1:115afdfbaa84 116 UUID uuid_message = UUID("8085495d-f273-443d-9e37-e27c9194f63b");
Cataract 1:115afdfbaa84 117
Cataract 1:115afdfbaa84 118 //Buffer for the service
Cataract 1:115afdfbaa84 119 char data[21];
Cataract 0:4817f7301801 120
Cataract 1:115afdfbaa84 121 // Init a service with "uuid" and a "20 char" characteristic with "uuid_message"
Cataract 1:115afdfbaa84 122 void initService(BLE &ble)
Cataract 1:115afdfbaa84 123 {
Cataract 1:115afdfbaa84 124 //Note: 20 bytes are the max. length for BLE
Cataract 1:115afdfbaa84 125 WriteOnlyArrayGattCharacteristic<char, 20> messagecharacter = WriteOnlyArrayGattCharacteristic<char, 20>(uuid_message,data);
Cataract 0:4817f7301801 126
Cataract 1:115afdfbaa84 127 GattCharacteristic * chars[] = {&messagecharacter};
Cataract 1:115afdfbaa84 128 GattService service = GattService(uuid,chars,1);
Cataract 0:4817f7301801 129 ble.gattServer().addService(service);
Cataract 0:4817f7301801 130 }
Cataract 0:4817f7301801 131
Cataract 0:4817f7301801 132 void bleInitComplete(BLE::InitializationCompleteCallbackContext *params)
Cataract 0:4817f7301801 133 {
Cataract 0:4817f7301801 134 BLE &ble = params->ble;
Cataract 0:4817f7301801 135 ble_error_t error = params->error;
Cataract 0:4817f7301801 136
Cataract 0:4817f7301801 137 if (error != BLE_ERROR_NONE) {
Cataract 0:4817f7301801 138 return;
Cataract 0:4817f7301801 139 }
Cataract 1:115afdfbaa84 140
Cataract 0:4817f7301801 141 ble.gap().onConnection(connectionCallback);
Cataract 0:4817f7301801 142 ble.gattServer().onDataWritten(onDataWrittenCallback);
Cataract 0:4817f7301801 143
Cataract 0:4817f7301801 144 initService(ble);
Cataract 0:4817f7301801 145
Cataract 0:4817f7301801 146 /* Setup advertising. */
Cataract 0:4817f7301801 147 ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::BREDR_NOT_SUPPORTED | GapAdvertisingData::LE_GENERAL_DISCOVERABLE);
Cataract 0:4817f7301801 148 ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LIST_16BIT_SERVICE_IDS, (uint8_t *)uuid16_list, sizeof(uuid16_list));
Cataract 0:4817f7301801 149 ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LOCAL_NAME, (uint8_t *)DEVICE_NAME, sizeof(DEVICE_NAME));
Cataract 0:4817f7301801 150 ble.gap().setAdvertisingType(GapAdvertisingParams::ADV_CONNECTABLE_UNDIRECTED);
Cataract 0:4817f7301801 151 ble.gap().setAdvertisingInterval(1000); /* 1000ms */
Cataract 0:4817f7301801 152 ble.gap().startAdvertising();
Cataract 0:4817f7301801 153 }
Cataract 0:4817f7301801 154
Cataract 0:4817f7301801 155 int main(void)
Cataract 0:4817f7301801 156 {
Cataract 1:115afdfbaa84 157 //Init BLE
Cataract 0:4817f7301801 158 BLE& ble = BLE::Instance(BLE::DEFAULT_INSTANCE);
Cataract 0:4817f7301801 159 ble.init(bleInitComplete);
Cataract 0:4817f7301801 160
Cataract 0:4817f7301801 161 while (ble.hasInitialized() == false) { /* spin loop */ }
Cataract 1:115afdfbaa84 162
Cataract 1:115afdfbaa84 163 ticker.attach(periodicCallback, 1); /* Blink LED every second */
Cataract 0:4817f7301801 164
Cataract 1:115afdfbaa84 165 pc.printf("init\r\n");
Cataract 1:115afdfbaa84 166 while (1) {
Cataract 0:4817f7301801 167 ble.waitForEvent();
Cataract 0:4817f7301801 168 }
Cataract 0:4817f7301801 169 }