Other Parts Discussed in Thread: EK-TM4C1294XL, , SYSBIOS
Hi,
I have a TI EK-TM4C1294XL Launchpad and I tried out the usb serial device example project from TivaWare with TI-RTOS.
If I program it to the microcontroller it is working fine I see the text that is sent periodically on a virtual COM Port on the PC.
But on the board what we developed we have a TM4C1290NCZAD microcontroller and I would like to have now exactly the same
functionality on our custom board.
I changed the MCU in the Build properties I have the correct cmd file for the MCU.
In the Predefines I changed the MCU to PART_TM4C1290NCZAD
In the TM4C1294XL.c file I commented out 2 lines in the initEMAC function because GPIO_PF0_EN0LED0 was not defined but this function is not called anyways
// GPIOPinConfigure(GPIO_PF0_EN0LED0); /* EK_TM4C1294XL_USR_D3 */
// GPIOPinConfigure(GPIO_PF4_EN0LED1); /* EK_TM4C1294XL_USR_D4 */
I can build the code without errors but I have some warnings which I did not have for the 1294XL
If I put this code on the 1290NCZAD and start it Windows writes me that it is a not recognized USB device and in the Device Manager I see "Unknown USB Device(Device Descriptor Request failed)
It is not shown as a COM Port.
The USB on the board is working because others wrote some drivers without TI-RTOS and it can echo bak what I send to the board.
If I add these lines to the void EK_TM4C1294XL_initGeneral(void) function which is called at the beginning then I get a virtual COM port
everything looks fine on the PC but I cant receive anything from the board and it also does not receive anything from the PC
USBClockEnable(USB0_BASE, 8, USB_CLOCK_INTERNAL);
SysCtlVCOGet(SYSCTL_XTAL_12MHZ, &ui32PLLRate);
USBDCDFeatureSet(0, USBLIB_FEATURE_CPUCLK, &ui32SysClock);
USBDCDFeatureSet(0, USBLIB_FEATURE_USBPLL, &ui32PLLRate);
It stays here:
/* Block while the device is NOT connected to the USB */
USBCDCD_waitForConnect(BIOS_WAIT_FOREVER);
and then goes to an AllBlocked part deep in to the SysBios.
Versions:
tirtos_tivac_2_16_00_08
TivaWare_C_Series-2.1.1.71b
CCS: 11.1.0.00011
Windows 10 PC
XDS200 USB Debugger on the custom board
The USB pins are the same on both boards.
I would be really happy if someone would have any suggestions how could I port this simple example to the 1290NCZAD because I could not make it work.
Thanks in advance!
