CCS/msp430F5638: msp430 bsl usb can not swith from CDC to HID

by the way, I use IAR work bench, not the CCS tool

How exactly is your code trying to switch to the BSL?

Switch use follwing code: in usb.c file

uint8_t usbGetDeviceDescriptor (void)
{
usbClearOEP0ByteCount();
wBytesRemainingOnIEP0 = SIZEOF_DEVICE_DESCRIPTOR;
#ifdef NON_COMPOSITE_MULTIPLE_INTERFACES
usbSendDataPacketOnEP0((uint8_t*)usbDeviceDescriptors[activeInterfaceIndex]);
#else
if(u8UpdateFimware != 1)
{
//u8UpdateFimware = 0;
usbSendDataPacketOnEP0((uint8_t*)&abromDeviceDescriptor);
__no_operation();
}
else
{
//u8UpdateFimware = 0;
usbSendDataPacketOnEP0((uint8_t*)&abromDeviceDescriptorFw);
__no_operation();
}
// usbSendDataPacketOnEP0((uint8_t*)&abromDeviceDescriptor);
#endif
return (FALSE);
}

add following in descriptor.c
USB_PID = 0x0010
USB_FW_PID = 0x0200

//uint8_t const abromDeviceDescriptor[SIZEOF_DEVICE_DESCRIPTOR] = {
uint8_t const abromDeviceDescriptor[SIZEOF_DEVICE_DESCRIPTOR] = {
SIZEOF_DEVICE_DESCRIPTOR, // Length of this descriptor
DESC_TYPE_DEVICE, // Type code of this descriptor
0x00, 0x02, // Release of USB spec
0x02, // Device's base class code
0x00, // Device's sub class code
0x00, // Device's protocol type code
EP0_PACKET_SIZE, // End point 0's packet size
USB_VID&0xFF, USB_VID>>8, // Vendor ID for device, TI=0x0451
// You can order your own VID at www.usb.org"
USB_PID&0xFF, USB_PID>>8, // Product ID for device,
// this ID is to only with this example
VER_FW_L, VER_FW_H, // Revision level of device
1, // Index of manufacturer name string desc
2, // Index of product name string desc
USB_STR_INDEX_SERNUM, // Index of serial number string desc
1 // Number of configurations supported
};
uint8_t const abromDeviceDescriptorFw[SIZEOF_DEVICE_DESCRIPTOR] = {
SIZEOF_DEVICE_DESCRIPTOR, // Length of this descriptor
DESC_TYPE_DEVICE, // Type code of this descriptor
0x00, 0x02, // Release of USB spec
0x02, // Device's base class code
0x00, // Device's sub class code
0x00, // Device's protocol type code
EP0_PACKET_SIZE, // End point 0's packet size
USB_VID&0xFF, USB_VID>>8, // Vendor ID for device, TI=0x0451
// You can order your own VID at www.usb.org"
USB_FW_PID&0xFF, USB_FW_PID>>8, // Product ID for device,
// this ID is to only with this example
VER_FW_L, VER_FW_H, // Revision level of device
1, // Index of manufacturer name string desc
2, // Index of product name string desc
USB_STR_INDEX_SERNUM, // Index of serial number string desc
1 // Number of configurations supported
};


global variable add uint8_t u8UpdateFimware;

when variable is 0 or 1, debug load image on the msp430F5638, connect to USB, works good. CDC works with GUI, HID work for python, but can not switch from 1 to 0 or 0 to 1 at run time, the switch is controlled by CDC GUI. because python not show ready..... it shows 0x2047 0x0200 not found............. or device manage of control panel,it does not show the CDC comm port.

hope this helps.

invoke BSL use instruction in the manual 450 or 317 or 2017

void updateMainMspFIrmware(void)
{
u8Layer2TaskScheduler &= ~UPDATE_MAIN_FIRMWARE;
u8UpdateFimware = 0;
__disable_interrupt();
USBKEYPID = 0x9628; // Unlock USB configuration registers
#if 0
USB_connect();
USB_enable();
#else
USB_disconnect(); //PUR high, disable VBUS interrupt
USB_disable(); //Disable USB module, disable PLL
#endif
// USBCNF &= ~PUR_EN; // Set PUR pin to hi-Z, logically disconnect from host
// USBPWRCTL &= ~VBOFFIE; // Disable VUSBoff interrupt
USBKEYPID = 0x9600; // Lock USB configuration register
__delay_cycles(500000);

//((void (*)())0x1000)(); // Call BSL
}

Louis

What's with all that commented-out code? Especially the "Call BSL" line?

Do you have the USB HID PC driver links? one of my PC does not have driver of HID. or it has yellow mark next to HID sample. and do you have PC CDC driver links? I should get all of the drivers first.