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@5:ee7e1a9e1985, 2016-03-31 (annotated)

Committer:
tanasaro10
Date:
Thu Mar 31 15:23:00 2016 +0000
Revision:
5:ee7e1a9e1985
Parent:
4:d7872f84c03c
Child:
6:a574229993b8
Small corrections

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
RedBearLab 0:cffe8ac1bdf0 48
RedBearLab 0:cffe8ac1bdf0 49 uint8_t txPayload[TXRX_BUF_LEN] = {0,};
RedBearLab 0:cffe8ac1bdf0 50 uint8_t rxPayload[TXRX_BUF_LEN] = {0,};
RedBearLab 0:cffe8ac1bdf0 51
RedBearLab 0:cffe8ac1bdf0 52 static uint8_t rx_buf[TXRX_BUF_LEN];
RedBearLab 0:cffe8ac1bdf0 53 static uint8_t rx_len=0;
RedBearLab 0:cffe8ac1bdf0 54
RedBearLab 0:cffe8ac1bdf0 55
RedBearLab 0:cffe8ac1bdf0 56 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 57
RedBearLab 0:cffe8ac1bdf0 58 GattCharacteristic rxCharacteristic (uart_rx_uuid, rxPayload, 1, TXRX_BUF_LEN, GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_NOTIFY);
RedBearLab 0:cffe8ac1bdf0 59
RedBearLab 0:cffe8ac1bdf0 60 GattCharacteristic *uartChars[] = {&txCharacteristic, &rxCharacteristic};
RedBearLab 0:cffe8ac1bdf0 61
RedBearLab 0:cffe8ac1bdf0 62 GattService uartService(uart_base_uuid, uartChars, sizeof(uartChars) / sizeof(GattCharacteristic *));
RedBearLab 0:cffe8ac1bdf0 63
RedBearLab 0:cffe8ac1bdf0 64
RedBearLab 0:cffe8ac1bdf0 65
RedBearLab 0:cffe8ac1bdf0 66 void disconnectionCallback(Gap::Handle_t handle, Gap::DisconnectionReason_t reason)
RedBearLab 0:cffe8ac1bdf0 67 {
RedBearLab 0:cffe8ac1bdf0 68 pc.printf("Disconnected \r\n");
RedBearLab 0:cffe8ac1bdf0 69 pc.printf("Restart advertising \r\n");
RedBearLab 0:cffe8ac1bdf0 70 ble.startAdvertising();
RedBearLab 0:cffe8ac1bdf0 71 }
RedBearLab 0:cffe8ac1bdf0 72
RedBearLab 2:4b66b69c7ecb 73 void WrittenHandler(const GattWriteCallbackParams *Handler)
RedBearLab 0:cffe8ac1bdf0 74 {
RedBearLab 0:cffe8ac1bdf0 75 uint8_t buf[TXRX_BUF_LEN];
RedBearLab 0:cffe8ac1bdf0 76 uint16_t bytesRead, index;
RedBearLab 0:cffe8ac1bdf0 77
RedBearLab 2:4b66b69c7ecb 78 if (Handler->handle == txCharacteristic.getValueAttribute().getHandle())
RedBearLab 0:cffe8ac1bdf0 79 {
RedBearLab 0:cffe8ac1bdf0 80 ble.readCharacteristicValue(txCharacteristic.getValueAttribute().getHandle(), buf, &bytesRead);
RedBearLab 0:cffe8ac1bdf0 81 memset(txPayload, 0, TXRX_BUF_LEN);
RedBearLab 0:cffe8ac1bdf0 82 memcpy(txPayload, buf, TXRX_BUF_LEN);
RedBearLab 0:cffe8ac1bdf0 83 pc.printf("WriteHandler \r\n");
tanasaro10 5:ee7e1a9e1985 84 pc.printf("Length: %d \r\n", bytesRead);
RedBearLab 0:cffe8ac1bdf0 85 pc.printf("Data: ");
RedBearLab 0:cffe8ac1bdf0 86 for(index=0; index<bytesRead; index++)
RedBearLab 0:cffe8ac1bdf0 87 {
RedBearLab 0:cffe8ac1bdf0 88 pc.putc(txPayload[index]);
RedBearLab 0:cffe8ac1bdf0 89 }
RedBearLab 0:cffe8ac1bdf0 90 pc.printf("\r\n");
RedBearLab 0:cffe8ac1bdf0 91 }
RedBearLab 0:cffe8ac1bdf0 92 }
RedBearLab 0:cffe8ac1bdf0 93
RedBearLab 0:cffe8ac1bdf0 94 void uartCB(void)
RedBearLab 0:cffe8ac1bdf0 95 {
RedBearLab 0:cffe8ac1bdf0 96 while(pc.readable())
RedBearLab 0:cffe8ac1bdf0 97 {
RedBearLab 0:cffe8ac1bdf0 98 rx_buf[rx_len++] = pc.getc();
RedBearLab 0:cffe8ac1bdf0 99 if(rx_len>=20 || rx_buf[rx_len-1]=='\0' || rx_buf[rx_len-1]=='\n')
RedBearLab 0:cffe8ac1bdf0 100 {
RedBearLab 0:cffe8ac1bdf0 101 ble.updateCharacteristicValue(rxCharacteristic.getValueAttribute().getHandle(), rx_buf, rx_len);
RedBearLab 0:cffe8ac1bdf0 102 pc.printf("RecHandler \r\n");
tanasaro10 5:ee7e1a9e1985 103 pc.printf("Length: %d \r\n",rx_len);
RedBearLab 0:cffe8ac1bdf0 104 rx_len = 0;
RedBearLab 0:cffe8ac1bdf0 105 break;
RedBearLab 0:cffe8ac1bdf0 106 }
RedBearLab 0:cffe8ac1bdf0 107 }
RedBearLab 0:cffe8ac1bdf0 108 }
RedBearLab 0:cffe8ac1bdf0 109
RedBearLab 0:cffe8ac1bdf0 110 int main(void)
RedBearLab 0:cffe8ac1bdf0 111 {
RedBearLab 0:cffe8ac1bdf0 112 ble.init();
RedBearLab 0:cffe8ac1bdf0 113 ble.onDisconnection(disconnectionCallback);
RedBearLab 0:cffe8ac1bdf0 114 ble.onDataWritten(WrittenHandler);
RedBearLab 0:cffe8ac1bdf0 115
RedBearLab 0:cffe8ac1bdf0 116 pc.baud(9600);
RedBearLab 0:cffe8ac1bdf0 117 pc.printf("SimpleChat Init \r\n");
RedBearLab 0:cffe8ac1bdf0 118
RedBearLab 0:cffe8ac1bdf0 119 pc.attach( uartCB , pc.RxIrq);
RedBearLab 0:cffe8ac1bdf0 120 // setup advertising
RedBearLab 0:cffe8ac1bdf0 121 ble.accumulateAdvertisingPayload(GapAdvertisingData::BREDR_NOT_SUPPORTED);
RedBearLab 0:cffe8ac1bdf0 122 ble.setAdvertisingType(GapAdvertisingParams::ADV_CONNECTABLE_UNDIRECTED);
RedBearLab 0:cffe8ac1bdf0 123 ble.accumulateAdvertisingPayload(GapAdvertisingData::SHORTENED_LOCAL_NAME,
RedBearLab 0:cffe8ac1bdf0 124 (const uint8_t *)"Biscuit", sizeof("Biscuit") - 1);
RedBearLab 0:cffe8ac1bdf0 125 ble.accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LIST_128BIT_SERVICE_IDS,
RedBearLab 0:cffe8ac1bdf0 126 (const uint8_t *)uart_base_uuid_rev, sizeof(uart_base_uuid));
RedBearLab 0:cffe8ac1bdf0 127 // 100ms; in multiples of 0.625ms.
RedBearLab 0:cffe8ac1bdf0 128 ble.setAdvertisingInterval(160);
RedBearLab 0:cffe8ac1bdf0 129
RedBearLab 0:cffe8ac1bdf0 130 ble.addService(uartService);
RedBearLab 0:cffe8ac1bdf0 131
RedBearLab 0:cffe8ac1bdf0 132 ble.startAdvertising();
RedBearLab 0:cffe8ac1bdf0 133 pc.printf("Advertising Start \r\n");
RedBearLab 0:cffe8ac1bdf0 134
RedBearLab 0:cffe8ac1bdf0 135 while(1)
RedBearLab 0:cffe8ac1bdf0 136 {
RedBearLab 0:cffe8ac1bdf0 137 ble.waitForEvent();
RedBearLab 0:cffe8ac1bdf0 138 }
RedBearLab 0:cffe8ac1bdf0 139 }
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