LPC11U24: Reinvoke ISP command not working

[jorick]

Processor: LPC11U24

I'm trying to invoke ISP mode from within my program but it isn't working.  I call ReinvokeISP immediately after the reset vector so there isn't anything between the reset and the ReinvokeISP.

If I have a blank flash, ISP mode works and I get this Linux debug console response:

usb 1-1: USB disconnect, device number 12 usb 1-1: new full-speed USB device number 13 using ci_hdrc usb 1-1: New USB device found, idVendor=1fc9, idProduct=000b usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3 usb 1-1: Product: LPC1XXX IFLASH usb 1-1: Manufacturer: NXP usb 1-1: SerialNumber: ISP usb-storage 1-1:1.0: USB Mass Storage device detected scsi host0: usb-storage 1-1:1.0 scsi 0:0:0:0: Direct-Access     NXP      LPC1XXX IFLASH   1.0  PQ: 0 ANSI: 0 CCS sd 0:0:0:0: [sda] 68 512-byte logical blocks: (34.8 kB/34.0 KiB) sd 0:0:0:0: [sda] Write Protect is off sd 0:0:0:0: [sda] No Caching mode page found sd 0:0:0:0: [sda] Assuming drive cache: write through  sda: sd 0:0:0:0: [sda] Attached SCSI removable disk

When I call ReinvokeISP, I get this response:

usb 1-1: USB disconnect, device number 6 usb 1-1: new full-speed USB device number 7 using ci_hdrc usb 1-1: device descriptor read/64, error -110 usb 1-1: device descriptor read/64, error -110

How can I get this to work?

[jorick]

Plain text responses:

Good USB  

[85927.907627] usb 1-1: USB disconnect, device number 12
[85938.928961] usb 1-1: new full-speed USB device number 13 using ci_hdrc
[85939.129337] usb 1-1: New USB device found, idVendor=1fc9, idProduct=000b
[85939.135964] usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[85939.143312] usb 1-1: Product: LPC1XXX IFLASH
[85939.147505] usb 1-1: Manufacturer: NXP
[85939.151419] usb 1-1: SerialNumber: ISP
[85939.158533] usb-storage 1-1:1.0: USB Mass Storage device detected
[85939.177393] scsi host0: usb-storage 1-1:1.0
[85940.253314] scsi 0:0:0:0: Direct-Access     NXP      LPC1XXX IFLASH   1.0  PQ: 0 ANSI: 0 CCS
[85940.270292] sd 0:0:0:0: [sda] 68 512-byte logical blocks: (34.8 kB/34.0 KiB)
[85940.282430] sd 0:0:0:0: [sda] Write Protect is off
[85940.292253] sd 0:0:0:0: [sda] No Caching mode page found
[85940.297488] sd 0:0:0:0: [sda] Assuming drive cache: write through
[85940.338703]  sda:
[85940.383276] sd 0:0:0:0: [sda] Attached SCSI removable disk  

Bad USB  

[24699.423422] usb 1-1: USB disconnect, device number 6
[24699.770179] usb 1-1: new full-speed USB device number 7 using ci_hdrc
[24704.940177] usb 1-1: device descriptor read/64, error -110
[24720.300173] usb 1-1: device descriptor read/64, error -110
[24720.560175] usb 1-1: new full-speed USB device number 8 using ci_hdrc
[24725.740172] usb 1-1: device descriptor read/64, error -110
[24741.100176] usb 1-1: device descriptor read/64, error -110
[24741.360174] usb 1-1: new full-speed USB device number 9 using ci_hdrc
[24751.900172] usb 1-1: device not accepting address 9, error -110

[jorick]

I found the problem.  Interrupts must not be disabled prior to calling Reinvoke ISP.