GPIO 13 and 33 ot working on WP76

1

Hi,
I tried to use GPIO 13 and 33 on the WP76, but somehow the seem to not work.

I did the usual procedure to set them up in sysfs:

echo 13 > /sys/class/gpio/export
echo out > /sys/class/gpio/gpio13/direction
echo 1 > /sys/class/gpio/gpio13/value

The level of the pin is not changing. Any clue why this is?

Regards,
Simon

2

I don’t see problem, I can control the GPIO13 output value:

root@swi-mdm9x28-wp:~# cm info
Device:                        WP7609
IMEI:                          359782080100399
IMEISV:                        E
FSN:                           WA803370010610
Firmware Version:              SWI9X07Y_02.37.03.00 73df45 jenkins 2020/04/08 10:59:14
Bootloader Version:            SWI9X07Y_02.37.03.00 73df45 jenkins 2020/04/08 10:59:14
MCU Version:                   002.015
PRI Part Number (PN):          9908102
PRI Revision:                  001.000
Carrier PRI Name:              GENERIC
Carrier PRI Revision:          002.095_000
SKU:                           1103843
Last Reset Cause:              Reset, User Requested
Resets Count:                  Expected: 166    Unexpected: 243
root@swi-mdm9x28-wp:~# echo 13 > /sys/class/gpio/export
root@swi-mdm9x28-wp:~# echo out > /sys/class/gpio/gpio13/direction
root@swi-mdm9x28-wp:~# echo 1 > /sys/class/gpio/gpio13/value
root@swi-mdm9x28-wp:~# echo 0 > /sys/class/gpio/gpio13/value
3

I’m able to export and set the value too, but the level is not changing when measured with a multi-meter/oscilloscope.

I’m able to set 42 and 8, but not the other ones listed for IOT0 on the mangoYellow according to this link.

root@swi-mdm9x28-wp:~# cm info
Device:                        WP7608
IMEI:                          352913090291210
IMEISV:                        E
FSN:                           3N926471590910
Firmware Version:              SWI9X07Y_02.37.03.00 73df45 jenkins 2020/04/08 10:59:14
Bootloader Version:            SWI9X07Y_02.37.03.00 73df45 jenkins 2020/04/08 10:59:14
MCU Version:                   002.015
PRI Part Number (PN):          9908665
PRI Revision:                  001.002
Carrier PRI Name:              SIERRA
Carrier PRI Revision:          001.060_000
SKU:                           1104194
Last Reset Cause:              Reset, User Requested
Resets Count:                  Expected: 101	Unexpected: 9

So what’s going wrong here?

4

your link is for mangoh green board.

You should check the schematic of mangoh yellow:

5

There is no information listed that this mapping is for mangohGreen.
I used the schematics from the link to set up my pins, but somehow they don’t seem to match the le_gpioX schema.

Where can I find the mapping for mangohYellows IoT0 connector? With that I mean the mapping from le_gpioX to pin on the IoT0 connector like in the link I posted earlier.

6

Did you see the schematic

7

I used it before, but I was focused on the IOT0 connector. Maybe the small hint that I should look it up on sheet 2 and the inner ring would have been helpfull