Valentin Tanasa / Mbed 2 deprecated nRF51822_TemperatureEx

This program is given as a sample exercise. It has all the functionality to be used on a BLE Nano device and to connect to SimpleChat application for Android/ iOS from RebBearLab. The aim of the exercise is to read a voltage and then to convert as good as possible the appropriate temperature in Celsius degrees. AI5 pin is considered for reading the voltage for the termistor. The ADC of AI5 is called every second. The function to be updated : update_measurements() from main.cpp file.

Dependencies:   BLE_API mbed nRF51822

Fork of nRF51822_DataLogger_with_Chat by Valentin Tanasa

main.cpp@6:a574229993b8, 2016-03-31 (annotated)

Committer:
tanasaro10
Date:
Thu Mar 31 16:29:40 2016 +0000
Revision:
6:a574229993b8
Parent:
5:ee7e1a9e1985
Child:
7:609dff35b660
Some new features included:; -> signals the sender and receiver messages; -> echo for message sent from RedBear App

Who changed what in which revision?

UserRevisionLine numberNew contents of line
RedBearLab 1:1c058e553423 1 /*
RedBearLab 0:cffe8ac1bdf0 2
RedBearLab 1:1c058e553423 3 Copyright (c) 2012-2014 RedBearLab
RedBearLab 1:1c058e553423 4
RedBearLab 1:1c058e553423 5 Permission is hereby granted, free of charge, to any person obtaining a copy of this software
RedBearLab 1:1c058e553423 6 and associated documentation files (the "Software"), to deal in the Software without restriction,
RedBearLab 1:1c058e553423 7 including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense,
RedBearLab 1:1c058e553423 8 and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so,
RedBearLab 1:1c058e553423 9 subject to the following conditions:
RedBearLab 1:1c058e553423 10 The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
RedBearLab 1:1c058e553423 11
RedBearLab 1:1c058e553423 12 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
RedBearLab 1:1c058e553423 13 INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
RedBearLab 1:1c058e553423 14 PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE
RedBearLab 1:1c058e553423 15 FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
RedBearLab 1:1c058e553423 16 ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
RedBearLab 1:1c058e553423 17
RedBearLab 1:1c058e553423 18 */
RedBearLab 1:1c058e553423 19
RedBearLab 1:1c058e553423 20 /*
RedBearLab 1:1c058e553423 21 * The application works with the BLEController iOS/Android App.
RedBearLab 1:1c058e553423 22 * Type something from the Terminal to send
RedBearLab 1:1c058e553423 23 * to the BLEController App or vice verse.
RedBearLab 1:1c058e553423 24 * Characteristics received from App will print on Terminal.
RedBearLab 1:1c058e553423 25 */
RedBearLab 1:1c058e553423 26
RedBearLab 0:cffe8ac1bdf0 27 #include "mbed.h"
RedBearLab 2:4b66b69c7ecb 28 #include "ble/BLE.h"
RedBearLab 0:cffe8ac1bdf0 29
RedBearLab 0:cffe8ac1bdf0 30
RedBearLab 0:cffe8ac1bdf0 31 #define BLE_UUID_TXRX_SERVICE 0x0000 /**< The UUID of the Nordic UART Service. */
RedBearLab 0:cffe8ac1bdf0 32 #define BLE_UUID_TX_CHARACTERISTIC 0x0002 /**< The UUID of the TX Characteristic. */
RedBearLab 0:cffe8ac1bdf0 33 #define BLE_UUIDS_RX_CHARACTERISTIC 0x0003 /**< The UUID of the RX Characteristic. */
RedBearLab 0:cffe8ac1bdf0 34
RedBearLab 0:cffe8ac1bdf0 35 #define TXRX_BUF_LEN 20
RedBearLab 0:cffe8ac1bdf0 36
RedBearLab 2:4b66b69c7ecb 37 BLE ble;
RedBearLab 0:cffe8ac1bdf0 38
RedBearLab 0:cffe8ac1bdf0 39 Serial pc(USBTX, USBRX);
RedBearLab 0:cffe8ac1bdf0 40
RedBearLab 0:cffe8ac1bdf0 41
RedBearLab 0:cffe8ac1bdf0 42 // The Nordic UART Service
RedBearLab 0:cffe8ac1bdf0 43 static const uint8_t uart_base_uuid[] = {0x71, 0x3D, 0, 0, 0x50, 0x3E, 0x4C, 0x75, 0xBA, 0x94, 0x31, 0x48, 0xF1, 0x8D, 0x94, 0x1E};
RedBearLab 0:cffe8ac1bdf0 44 static const uint8_t uart_tx_uuid[] = {0x71, 0x3D, 0, 3, 0x50, 0x3E, 0x4C, 0x75, 0xBA, 0x94, 0x31, 0x48, 0xF1, 0x8D, 0x94, 0x1E};
RedBearLab 0:cffe8ac1bdf0 45 static const uint8_t uart_rx_uuid[] = {0x71, 0x3D, 0, 2, 0x50, 0x3E, 0x4C, 0x75, 0xBA, 0x94, 0x31, 0x48, 0xF1, 0x8D, 0x94, 0x1E};
RedBearLab 0:cffe8ac1bdf0 46 static const uint8_t uart_base_uuid_rev[] = {0x1E, 0x94, 0x8D, 0xF1, 0x48, 0x31, 0x94, 0xBA, 0x75, 0x4C, 0x3E, 0x50, 0, 0, 0x3D, 0x71};
RedBearLab 0:cffe8ac1bdf0 47
tanasaro10 6:a574229993b8 48 uint16_t txPower = 0xCD;
RedBearLab 0:cffe8ac1bdf0 49
RedBearLab 0:cffe8ac1bdf0 50 uint8_t txPayload[TXRX_BUF_LEN] = {0,};
RedBearLab 0:cffe8ac1bdf0 51 uint8_t rxPayload[TXRX_BUF_LEN] = {0,};
RedBearLab 0:cffe8ac1bdf0 52
RedBearLab 0:cffe8ac1bdf0 53 static uint8_t rx_buf[TXRX_BUF_LEN];
RedBearLab 0:cffe8ac1bdf0 54 static uint8_t rx_len=0;
RedBearLab 0:cffe8ac1bdf0 55
RedBearLab 0:cffe8ac1bdf0 56
RedBearLab 0:cffe8ac1bdf0 57 GattCharacteristic txCharacteristic (uart_tx_uuid, txPayload, 1, TXRX_BUF_LEN, GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_WRITE | GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_WRITE_WITHOUT_RESPONSE);
RedBearLab 0:cffe8ac1bdf0 58
RedBearLab 0:cffe8ac1bdf0 59 GattCharacteristic rxCharacteristic (uart_rx_uuid, rxPayload, 1, TXRX_BUF_LEN, GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_NOTIFY);
RedBearLab 0:cffe8ac1bdf0 60
RedBearLab 0:cffe8ac1bdf0 61 GattCharacteristic *uartChars[] = {&txCharacteristic, &rxCharacteristic};
RedBearLab 0:cffe8ac1bdf0 62
RedBearLab 0:cffe8ac1bdf0 63 GattService uartService(uart_base_uuid, uartChars, sizeof(uartChars) / sizeof(GattCharacteristic *));
RedBearLab 0:cffe8ac1bdf0 64
RedBearLab 0:cffe8ac1bdf0 65
RedBearLab 0:cffe8ac1bdf0 66
RedBearLab 0:cffe8ac1bdf0 67 void disconnectionCallback(Gap::Handle_t handle, Gap::DisconnectionReason_t reason)
RedBearLab 0:cffe8ac1bdf0 68 {
RedBearLab 0:cffe8ac1bdf0 69 pc.printf("Disconnected \r\n");
RedBearLab 0:cffe8ac1bdf0 70 pc.printf("Restart advertising \r\n");
RedBearLab 0:cffe8ac1bdf0 71 ble.startAdvertising();
RedBearLab 0:cffe8ac1bdf0 72 }
RedBearLab 0:cffe8ac1bdf0 73
RedBearLab 2:4b66b69c7ecb 74 void WrittenHandler(const GattWriteCallbackParams *Handler)
RedBearLab 0:cffe8ac1bdf0 75 {
tanasaro10 6:a574229993b8 76 uint8_t buf[TXRX_BUF_LEN+1];
RedBearLab 0:cffe8ac1bdf0 77 uint16_t bytesRead, index;
RedBearLab 0:cffe8ac1bdf0 78
RedBearLab 2:4b66b69c7ecb 79 if (Handler->handle == txCharacteristic.getValueAttribute().getHandle())
RedBearLab 0:cffe8ac1bdf0 80 {
tanasaro10 6:a574229993b8 81 ble.readCharacteristicValue(txCharacteristic.getValueAttribute().getHandle(), &buf[2], &bytesRead);
RedBearLab 0:cffe8ac1bdf0 82 memset(txPayload, 0, TXRX_BUF_LEN);
tanasaro10 6:a574229993b8 83 memcpy(txPayload, &buf[2], TXRX_BUF_LEN);
tanasaro10 6:a574229993b8 84 //echo back
tanasaro10 6:a574229993b8 85 buf[0]='R';
tanasaro10 6:a574229993b8 86 buf[1]=':';
tanasaro10 6:a574229993b8 87 ble.updateCharacteristicValue(rxCharacteristic.getValueAttribute().getHandle(), buf, bytesRead+2);
tanasaro10 6:a574229993b8 88 // print on PC monitor
tanasaro10 6:a574229993b8 89 //pc.printf("WriteHandler \r\n");
tanasaro10 6:a574229993b8 90 //pc.printf("Length: %d \r\n", bytesRead);
tanasaro10 6:a574229993b8 91 pc.printf("R: ");
RedBearLab 0:cffe8ac1bdf0 92 for(index=0; index<bytesRead; index++)
RedBearLab 0:cffe8ac1bdf0 93 {
RedBearLab 0:cffe8ac1bdf0 94 pc.putc(txPayload[index]);
RedBearLab 0:cffe8ac1bdf0 95 }
RedBearLab 0:cffe8ac1bdf0 96 pc.printf("\r\n");
RedBearLab 0:cffe8ac1bdf0 97 }
RedBearLab 0:cffe8ac1bdf0 98 }
RedBearLab 0:cffe8ac1bdf0 99
RedBearLab 0:cffe8ac1bdf0 100 void uartCB(void)
RedBearLab 0:cffe8ac1bdf0 101 {
RedBearLab 0:cffe8ac1bdf0 102 while(pc.readable())
RedBearLab 0:cffe8ac1bdf0 103 {
RedBearLab 0:cffe8ac1bdf0 104 rx_buf[rx_len++] = pc.getc();
RedBearLab 0:cffe8ac1bdf0 105 if(rx_len>=20 || rx_buf[rx_len-1]=='\0' || rx_buf[rx_len-1]=='\n')
tanasaro10 6:a574229993b8 106 {
tanasaro10 6:a574229993b8 107 ble.updateCharacteristicValue(rxCharacteristic.getValueAttribute().getHandle(), rx_buf, rx_len);
tanasaro10 6:a574229993b8 108 //pc.printf("Rec: Length: %d \r\n",rx_len);
tanasaro10 6:a574229993b8 109 rx_len = 2;
tanasaro10 6:a574229993b8 110 rx_buf[0]='S';
tanasaro10 6:a574229993b8 111 rx_buf[1]=':';
RedBearLab 0:cffe8ac1bdf0 112 break;
RedBearLab 0:cffe8ac1bdf0 113 }
RedBearLab 0:cffe8ac1bdf0 114 }
RedBearLab 0:cffe8ac1bdf0 115 }
RedBearLab 0:cffe8ac1bdf0 116
RedBearLab 0:cffe8ac1bdf0 117 int main(void)
RedBearLab 0:cffe8ac1bdf0 118 {
RedBearLab 0:cffe8ac1bdf0 119 ble.init();
RedBearLab 0:cffe8ac1bdf0 120 ble.onDisconnection(disconnectionCallback);
RedBearLab 0:cffe8ac1bdf0 121 ble.onDataWritten(WrittenHandler);
RedBearLab 0:cffe8ac1bdf0 122
tanasaro10 6:a574229993b8 123 pc.baud(19200);
RedBearLab 0:cffe8ac1bdf0 124 pc.printf("SimpleChat Init \r\n");
RedBearLab 0:cffe8ac1bdf0 125
RedBearLab 0:cffe8ac1bdf0 126 pc.attach( uartCB , pc.RxIrq);
RedBearLab 0:cffe8ac1bdf0 127 // setup advertising
RedBearLab 0:cffe8ac1bdf0 128 ble.accumulateAdvertisingPayload(GapAdvertisingData::BREDR_NOT_SUPPORTED);
RedBearLab 0:cffe8ac1bdf0 129 ble.setAdvertisingType(GapAdvertisingParams::ADV_CONNECTABLE_UNDIRECTED);
RedBearLab 0:cffe8ac1bdf0 130 ble.accumulateAdvertisingPayload(GapAdvertisingData::SHORTENED_LOCAL_NAME,
tanasaro10 6:a574229993b8 131 (const uint8_t *)"MyBleVT", sizeof("MyBleVT") - 1);
RedBearLab 0:cffe8ac1bdf0 132 ble.accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LIST_128BIT_SERVICE_IDS,
RedBearLab 0:cffe8ac1bdf0 133 (const uint8_t *)uart_base_uuid_rev, sizeof(uart_base_uuid));
tanasaro10 6:a574229993b8 134 //ble.accumulateAdvertisingPayload(GapAdvertisingData::TX_POWER_LEVEL,(const uint8_t *)txPower, sizeof(txPower));
tanasaro10 6:a574229993b8 135 ble.setTxPower(txPower);
RedBearLab 0:cffe8ac1bdf0 136 // 100ms; in multiples of 0.625ms.
RedBearLab 0:cffe8ac1bdf0 137 ble.setAdvertisingInterval(160);
RedBearLab 0:cffe8ac1bdf0 138
RedBearLab 0:cffe8ac1bdf0 139 ble.addService(uartService);
RedBearLab 0:cffe8ac1bdf0 140
RedBearLab 0:cffe8ac1bdf0 141 ble.startAdvertising();
RedBearLab 0:cffe8ac1bdf0 142 pc.printf("Advertising Start \r\n");
RedBearLab 0:cffe8ac1bdf0 143
RedBearLab 0:cffe8ac1bdf0 144 while(1)
RedBearLab 0:cffe8ac1bdf0 145 {
RedBearLab 0:cffe8ac1bdf0 146 ble.waitForEvent();
RedBearLab 0:cffe8ac1bdf0 147 }
RedBearLab 0:cffe8ac1bdf0 148 }
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