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Forum Index : Microcontroller and PC projects : Upgrading firmware on the PicomiteVGA USB CMM1.5

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gemh
Newbie

Joined: 25/12/2024
Location: Australia
Posts: 3
Posted: 06:18am 31 Dec 2024
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Hi all,

I received a CMM1.5 recently and it works as expected except when trying to update to newer firmware.

Whenever I apply power with the boot button on the front panel held down the device seems to lock up.  I do not get anything detected as a USB device where I can add the new firmware, there is also no output over serial (as expected), and the heart beat LED does not light up.  I know the USB C cables work as I use them for serial access to the CMM1.5, and have also used them to flash a couple of the pink USB C based Picos recently (I have tried a few USB C data cables).  I am using a MacBook Pro (Apple Silicon/Latest macOS 15.2) and this is the only device I have had issues with.

Am I missing something here?  Is the process for updating a little different on this device?

Thanks in advance,

Guy

PicoMiteVGA MMBasic USB Edition 5.09.00RC3
Copyright 2011-2024 Geoff Graham
Copyright 2016-2024 Peter Mather

> US USB Keyboard Connected on channel 1
> USB Mouse Connected on channel 2
> option list
PicoMiteVGA MMBasic USB Edition  5.09.00RC3
OPTION SERIAL CONSOLE COM2,GP8,GP9
OPTION SYSTEM I2C GP14,GP15
OPTION FLASH SIZE 16777216
OPTION COLOURCODE ON
OPTION KEYBOARD US
OPTION PICO OFF
OPTION CPUSPEED (KHz) 252000
OPTION SDCARD GP13, GP10, GP11, GP12
OPTION VGA PINS GP23,GP18
OPTION AUDIO GP16,GP17', ON PWM CHANNEL 0
OPTION RTC AUTO ENABLE
OPTION MODBUFF ENABLE  512
OPTION PLATFORM CMM1.5
>
 
TassyJim

Guru

Joined: 07/08/2011
Location: Australia
Posts: 6135
Posted: 06:45am 31 Dec 2024
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  Quote  To install the firmware connect a USB-A to USB-A cable to the USB-A socket while holding down the "BOOT" switch. Copy the PicoMiteVGAUSB V5.09 firmware .uf2 file to the disk drive created by the RP2040. Then remove the USB-A cable and connect a USB-C for a console. Type OPTION RESET CMM1.5 and you are then fully configured


https://www.thebackshed.com/forum/ViewTopic.php?TID=16837&PID=219735#219735#219735
VK7JH
MMedit   MMBasic Help
 
Grogster

Admin Group

Joined: 31/12/2012
Location: New Zealand
Posts: 9350
Posted: 06:45am 31 Dec 2024
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You need to use the USB-A socket.
You will need a USB-A to USB-A lead.

The USB-C connector, is for console only(and power) - it does not know how to talk to the unit for FM upgrades, that has to go via the USB-A connector.

Basically.....

1) Hold the BOOT button down
2) Plug in a USB-A to USB-A cable from your computer.

The usual flash-drive will then appear, and you can copy/paste the FW file you want.
Smoke makes things work. When the smoke gets out, it stops!
 
Grogster

Admin Group

Joined: 31/12/2012
Location: New Zealand
Posts: 9350
Posted: 06:46am 31 Dec 2024
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DAMN!!!!  
Jim beat me to it!  
Smoke makes things work. When the smoke gets out, it stops!
 
gemh
Newbie

Joined: 25/12/2024
Location: Australia
Posts: 3
Posted: 06:48am 31 Dec 2024
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Thanks heaps.  

I'll have to see if I have any USB-A to A cables.  Happy new year!
 
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