BC66 Uploading success is about the luck using Mac Os

JarkkoM · February 10, 2020, 6:35pm

Hi all,

When programming with PlatformIO and uploading program to BC66 chip there are errors sometimes.

Hardware I am using is Olimex NB-IoT development board. (https://www.olimex.com/Products/IoT/NB-IoT/NB-IoT-DevKit/open-source-hardware)

Every 5-10th times while uploading I’ll get it through. And the result is as expected:

Use manually specified: /dev/cu.wchusbserial1410
Uploading: program
Waiting module for POWER-ON or RESET <===================> DONE
Starting <======================================> DONE
Writhing <====================================> DONE
Ready

Other upload trials I’ll get error like this:
Use manually specified: /dev/cu.wchusbserial1410
Uploading: program
Waiting module for POWER-ON or RESET <=
ERROR: Boot answer
*** [upload] Explicit exit, status 2

Some other errors persist too.

Any ideas why this is like this? Is it because of Mac Os?

I have installed latest USB driver from here: https://www.olimex.com/Products/Breadboarding/BB-CH340T/resources/CH341SER_MAC.ZIP

Thanks, Jarkko

WizIO · February 10, 2020, 6:40pm

HI, I not have MAC - can`t test…

Look line 193 and 202

github.com

Wiz-IO/platform-quectel/blob/master/builder/frameworks/MT2625.py#L207


    while True:

        if step % 10 == 0: PB_STEP()

        step += 1

        self.s.write( b"\xA0" )      

        if self.s.read(1) == b"\x5F":

            self.s.timeout = 1.0        

            self.s.write(b"\x0A\x50\x05")

            r = self.s.read(3)

            if r == b"\xF5\xAF\xFA":  

                break

            else: ERROR("Boot answer")

        timeout -= self.s.timeout

        if timeout < 0:

            ERROR("Boot timeout")   

        if None != self.plugin: self.p.onBootStep(self.s, step)      



def da_read16(self, addr, sz=1):

    r = self.cmd(CMD_READ16 + struct.pack(">II", addr, sz), (sz*2)+4)

    return struct.unpack(">" + sz * 'HHH', r) 



def da_write16(self, addr, val):

or contact with Olimex support

rpasichnyk · July 29, 2020, 5:07pm

I can’t even upload once

Configuring upload protocol…
Looking for upload port…
Auto-detected: /dev/cu.usbserial-1420
Uploading: program
THE UPLOADER USE PLUGIN Olimex-NB-IoT-DevKit
AUTO-START-READY --> D2A209000000000001
<-- D2A209000000000001
<-- 0001
–> 0011
<-- 0011
<-- 0001
–> D08000000000000001
<-- D08000000000000001
<-- 00008A100000
–> D08000000400000001
<-- D08000000400000001
<-- 00008A000000
–> D08000000800000001
<-- D08000000800000001
<-- 000026250000
–> D08000000C00000001
<-- D08000000C00000001
<-- 000083000000
–> D90401500000000CB50400200000001000
<-- D90401500000000CB50400200000001000
<-- 0000
<–

ERROR: EPP Answer

rpasichnyk · July 31, 2020, 1:37pm

I managed to solve the issue by installing latest CH340 driver