I am trying to read the larger text file from BLE device using react-native-ble-plx library of react native, I am able to read/fetch only end of the file and few line in between the file. I am copying the code that I am trying.PLease suggest me, how to read the entire file content.
--Output file-
const executeCommandTest = (device: Device, command: any) => {
console.log('entered executeCommandTest')
return new Promise((resolve, reject) => {
bleManager.discoverAllServicesAndCharacteristicsForDevice(device.id)
.then(() => {
const writeCharacteristicUUID = 'writeCharacteristicID';
//let commandbtoa = btoa(command);
let commandbtoa = encode(command);
bleManager.writeCharacteristicWithResponseForDevice(device.id, '00001234-0000-1000-8000-00805f9b34fb', writeCharacteristicUUID, commandbtoa)
.then(() => {
const readCharacteristicUUID = 'read characteristicsID';
let responseAccumulator = '';
const readResponse = () => {
bleManager.requestMTUForDevice(device.id, 512)
.then((mtu) => {
console.log('MTU size updated:');
// MTU size successfully updated, proceed with other operations
bleManager.readCharacteristicForDevice(device.id, 'serviceID', readCharacteristicUUID)
.then(async (response) => {
if (response.value != null) {
// const receivedData = atob(response.value);
const receivedData = decode(response.value);
responseAccumulator += receivedData;
console.log('response : ', receivedData);
// Check if the end of file is reached
if (receivedData.includes('End of Files')) {
console.log('END OF FILE')
resolve(responseAccumulator);
} else {
// Continue rea ding the response
console.log('Continue reading the response')
// await sleep(0.01);
// readResponse();
setTimeout(readResponse, 0.1);
}
} else {
reject(new Error('No response data'));
}
})
.catch((error) => {
console.error('Failed to read response:', error);
reject(error);
});
})
.catch((error) => {
console.error('Failed to update MTU size:', error);
// Handle the error accordingly
});
};
console.log('Start reading the response')
// Start reading the response
readResponse();
})
.catch((error) => {
console.error('Failed to write command:', error);
reject(error);
});
})
.catch((error) => {
console.error('Failed to discover services and characteristics:', error);
reject(error);
});
});
};
I am calling the readResonse() method after some delay to read continuously.
I am attaching the text file that I am trying to read and the output I am getting after reading the file.
I tried adding the delay and looing the readResponse() method, but it still not working.
