USBSerial not working in for FRDM-K22f, MBED 5.13

[rkreifeldt]

Description

I'm trying to use USBSerial on the FRDM-K22F with latest MBED 5.13.
I'm exporting to MCUXpresso.

It is first throwing an error because it is calling USBPhy *get_usb_phy() over in mbed_usb_phy. This is due to the face that DEVICE_USBDEVICE is not defined, so it is calling this function rather than the one over in USBPhy_Kinetis.cpp

I noticed is DEVICE_USBDEVICE is not in my Makefile C_FLAGS
Going back to the targets.json I notice that "USBDEVICE" is not in the "device_has" for the MCU_K22F512.

I added DEVICE_USBDEVICE to the Makefile C_Flags. This got it to compile.

My code is this:
#include "mbed.h"
#include "USBSerial.h"

DigitalOut myled(LED2);
USBSerial serial(false, 0x1f00, 0x2012,0x0001);

int main() {
while(1) {
myled = 1;
wait(0.5);
myled = 0;
wait(0.5);
printf("std:Hello World\n");
serial.printf("USB:Hello World\n");
}
}

Doing a look on my mac with ls /dev/tty.usb* I see the USB for the debug connection and if I attach using screen then I see my expected output.

The USBSerial however does not get recognized by the system.

I had it working on this board with MBED2 (API was different on USBSerial constructor), but I really want to go forward with MBED5

Issue request type

[ ] Question
[ ] Enhancement
[x ] Bug

[ciarmcom]

Internal Jira reference: https://jira.arm.com/browse/MBOCUSTRIA-1451

[0xc0170]

@maciejbocianski should this work for K22F?

cc @ARMmbed/team-nxp

[maciejbocianski]

I wouldn't expect that it works as this target doesn't have USBDEVICE in target configuration (targets.json).
Freescale has generic implementation for few kinetics devices (USBPhy_Kinetis.cpp) but actually only K64F was tested that is why only K64F has USB enabled

mbed-os/targets/targets.json

Line 1521 in b82cfcc

"USBDEVICE",

@fkjagodzinski @c1728p9

[rkreifeldt]

@maciejbocianski
If you look at my original report I noted that the USBDevice was not included in the targets.json

I assumed this was a temp problem that would be easily fixed. Is no one at NXP working on this?

So @ARMmbed/team-nxp are you still supporting MBED as a platform? Do you plan to get things up and working for MBED 5?

[rkreifeldt]

Should I be worried that ARMmbed/team-nxp gets a 404 error when you click the link? In NXP still supporting MBED?

[mmahadevan108]

@rkreifeldt I will take a look at this and get back to you.

[0xc0170]

Should I be worried that ARMmbed/team-nxp gets a 404 error when you click the link? In NXP still supporting MBED?

Teams are not publicly visible. they are.

[mmahadevan108]

@rkreifeldt I am working with the ARM team to enable USBDEVICE inside K22F. Current mbed USB test RAM requirements cannot be met by K22F.

[mmahadevan108]

Below PR to add USB support on K22F
#11284

[0xc0170]

PR integrated. @rkreifeldt please retest on latest master and report back if any issues

[rkreifeldt]

Thanks I will, I assume I'll have to grab the latest master from Github instead of getting it from the online export tools.

[0xc0170]

Yes, I'll close this as resolved. IF there are issues, pls update