We have a project to read raw binary GPS (in a remote environment) from a ublox NEO M8N and write it to the sd card using a pyboard and then convert the resultant binary file using the RTK library into the Rinex. I did it first with a conventional python3 program on pc (linux) and this worked fine however when i do the same thing using the pybaord the resultant binary file does not convert correctly implying that there is something wrong with the binary file that has been created.
Below is the python3 script that works and the micropython script that doesnt. Can anybody see where i may have gone wrong in the micropython code. What values should i set for timeout and read_buf_len in the uart setup.
Any help is much appreciated.
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import serial, time, os def setupSerial(): print("Setting up serial object") ser = serial.Serial( port=GPSPort, baudrate=115200, bytesize=8, parity='N', stopbits=1, #timeout=0, xonxoff=0, rtscts=0 ) print(ser) return ser print('UbloxRawGPSLog') time.sleep(2) newFile = open("/home/richard/Temp/GPSBinTest-Py.ubx","ab") GPSPort='/dev/ttyUSB0' ser=setupSerial() newFileBytes= while True: newFileBytes= while ser.inWaiting()==0: pass z=ser.readline() newFileBytes.append(z) for x in range(len(newFileBytes)): newFile.write(newFileBytes[x])
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import time from pyb import UART, LED def setupUart(): print('Setting up uart') ser=UART(1,115200) #x10=uart_RX ser.init(115200,timeout=50,read_buf_len=64) #check this return ser time.sleep(2) newFile = open("GPSBinTest.ubx","ab") ser=setupUart() newFileBytes= led=LED(1) led2=LED(2) led.off() led2.off() while True: newFileBytes= while ser.any()==0: led2.toggle() z=ser.readline() newFileBytes.append(z) led.toggle() for x in range(len(newFileBytes)): newFile.write(newFileBytes[x])