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VK2AHB
Regular Member

Joined: 28/07/2022
Location: Australia
Posts: 51

Posted: 01:38am 09 Jun 2023

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Using these options, all has been fine.

> option list
OPTION SYSTEM SPI GP18,GP19,GP16
OPTION SYSTEM I2C GP2,GP3
OPTION LCDPANEL ILI9488, PORTRAIT,GP15,GP14,GP13
OPTION TOUCH GP12,GP11
OPTION SDCARD GP22
OPTION RTC AUTO ENABLE

Now suddenly, SDCARD is not found

I have reset all and re-entered.

Paul VK2AHB

ice2642

Regular Member

Joined: 27/05/2023
Location: Brazil
Posts: 82

Posted: 01:48am 09 Jun 2023

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Just some ideas,

The SD was formatted in fat16 or fat32 ? Try an other SD-card to test if the problem is not in SD-card.

Do you check if the wire is well connected?

Best Regards,

MMBasic 5.0707 on PicoMite VGA

phil99

Guru

Joined: 11/02/2018
Location: Australia
Posts: 2835

Posted: 02:18am 09 Jun 2023

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Do you have the ILI9488 LCD_SDO connected directly to MISO - GP16?

If so that will block access to the SD card. Connect a Schottky diode with anode to LCD_SDO and cathode to MISO. Add a 10k resistor from LCD_CS to MISO.

The ILI9488 chip has a fault that prevents sharing MISO. For a quick test disconnect LCD_SDO and see if the SD card works.

VK2AHB
Regular Member

Joined: 28/07/2022
Location: Australia
Posts: 51

Posted: 06:02am 12 Jun 2023

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"Do you have the ILI9488 LCD_SDO connected directly to MISO - GP16?"

option SYSTEM SPI GP18, GP19, GP16
OPTION LCDPANEL ili9488, p, GP15, GP14, GP13.

Thank you Phil, I'll have a look in the junk box for a diode.

There is another thread about this display with the same probs that I have. ILI9341 only shows 240x240. It is referenced in my other thread above this one.

I can use the SDCard by OPTION RESET , setting the SDCard option as per the board, then loading the file I want.

The link referred to above mentions feeding with 3.3V instead of 5V, I will have to investigate.

Paul VK2AHB

hhtg1968
Senior Member

Joined: 25/05/2023
Location: Germany
Posts: 143

Posted: 06:20am 12 Jun 2023

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Did you ever had access to an/ the sd card?

I got this error message too. i bought an sd-card adapter for 5v (arduino). the pico uses 3.3v.

i use a bridge between 5v and 3.3v (thanks to this forum!!!!) and now it is running!

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