- Ask a related questionWhat is a related question?A related question is a question created from another question. When the related question is created, it will be automatically linked to the original question.
Tool/software: TI C/C++ Compiler
CCS v8.3.0.00009
TI-RTOS 2.16.01.14 with TivaWare_C_Series-2.1.1.71b
XDCTools 3.32.2.25
ARM CGT 5.2.9 vs 18.12.1.LTS
Windows 10 version 1809
EK-TM4C1294XL Rev. D
I am using the example http://processors.wiki.ti.com/index.php/TI-RTOS_USB_DFU .
When building the project with ARM CGT v5.2.6 or v5.2.9 I can perform a firmware update using runtime DFU (dfuprog -m, dfuprog -r -f file.dfu). I cannot, however, see the device in LM Flash Programmer (version 1613). I can see the device in LM Flash Programmer if I press the force update check button whilst plugging the board in.
When building the project with compiler version above 5.2.9 (I would like to use 18.12.1.LTS), it builds, and works in runtime. Issuing the command "dfuprog -m" results in the DFU device appearing correctly in Device Manager, but after issuing the command "dfuprog -r -f usbserialdfu.dfu" I get the message "Error DFU_ERR_UNKNOWN (-4) reading flash parameters". Afterwards Windows displays the message "Unknown USB Device (Device Descriptor Failed)".
The drivers I used in runtime mode (vcom+runtime DFU) are the ones provided with the example (with a local test certificate on one computer, Windows in Test Mode on the second computer), the driver used for the DFU device after detach is from the patch: http://software-dl.ti.com/tiva-c/SW-TM4C/latest/exports/SW-TM4C-2.1.4.178.PATCH-1.0.zip .
I tried the solution from this post https://e2e.ti.com/support/microcontrollers/other/f/908/t/755577 but it did not work for me.
These are the (untouched) include options from the example:
${COM_TI_RTSC_TIRTOSTIVAC_INCLUDE_PATH}
${CG_TOOL_ROOT}/include
${workspace_loc:/${ProjName}}
${COM_TI_RTSC_TIRTOSTIVAC_INSTALL_DIR}/products/TivaWare_C_Series-2.1.1.71b
For reference the code below from the example which is similar to the one in the aforementioned forum post.
Any suggestions on what I might be doing wrong, what I should change or where to look? Thanks!
//======== DFU.c ========
#include <stdbool.h>
#include <stdint.h>
#include <inc/hw_memmap.h>
#include <inc/hw_nvic.h>
#include <inc/hw_types.h>
#include <driverlib/debug.h>
#include <driverlib/rom.h>
#include <driverlib/rom_map.h>
#include <driverlib/sysctl.h>
#include <driverlib/systick.h>
#include <driverlib/usb.h>
#include <usblib/usblib.h>
#include <usblib/device/usbdevice.h>
#include "DFU.h"
//======== DFU_renumerate ========
void DFU_renumerate(void)
{
uint32_t ui32SysClock;
/* terminate the usb device controller and detach from the bus */
USBDCDTerm(0);
/* disable all interrupts */
ROM_IntMasterDisable();
/* disable SysTick and its interrupt */
ROM_SysTickIntDisable();
ROM_SysTickDisable();
/* Disable all processor interrupts. Instead of disabling them
* one at a time, a direct write to NVIC is done to disable all
* peripheral interrupts.
*/
HWREG(NVIC_DIS0) = 0xffffffff;
HWREG(NVIC_DIS1) = 0xffffffff;
HWREG(NVIC_DIS2) = 0xffffffff;
HWREG(NVIC_DIS3) = 0xffffffff;
HWREG(NVIC_DIS4) = 0xffffffff;
/* run from the pll at 120 MHz */
ui32SysClock = MAP_SysCtlClockFreqSet((SYSCTL_XTAL_25MHZ | SYSCTL_OSC_MAIN
| SYSCTL_USE_PLL | SYSCTL_CFG_VCO_480), 120000000);
/* enable and reset the usb peripheral */
ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_USB0);
ROM_SysCtlPeripheralReset(SYSCTL_PERIPH_USB0);
ROM_USBClockEnable(USB0_BASE, 8, USB_CLOCK_INTERNAL);
/* wait for about a second */
ROM_SysCtlDelay(ui32SysClock / 3);
/* re-enable interrupts at the NVIC level */
ROM_IntMasterEnable();
/* call the usb boot loader */
ROM_UpdateUSB(0);
/* should never get here */
while (true) {
/* empty */
}
}
