LPC Microcontrollers中的主题 Re: How do I reset to user code after ReinvokeISP

How do I reset to user code after ReinvokeISP

seowwoo_quek — Thu, 25 Jul 2019 15:47:59 GMT

HI,

I am using LPC51U68. I have written a test application

ReinvokeISP and then program the firmware.bin. But how do I exit from ISP mode using my test application so hat LPC51U68 can reset to user mode.

Thanks.

Omar_Anguiano — Tue, 30 Jul 2019 20:46:21 GMT

It depends on the protocol you are using.

If you are using I2C/SPI ISP mode you may use SH_CMD_RESET command.

Another way for this is though GO command if you are using USART ISP mode.

-4.5.8 "Go"

-4.8.2 "SH_CMD_RESET (0xA2) command"

Let me know if this helps

Best regards,

Omar

seowwoo_quek — Mon, 05 Aug 2019 08:55:40 GMT

Hi Omar,

I am using the ISP USB mode. Does the "SH_CMD_RESET (0xA2) command" works for USB mode?

Thanks.

seowwoo_quek — Wed, 07 Aug 2019 03:50:37 GMT

Hi Omar,

I am using the ISP USB mode. How to reset to user code when in ISP USB mode

Thanks.

Omar_Anguiano — Wed, 07 Aug 2019 20:02:35 GMT

Unfortunately the "SH_CMD_RESET(0xA2) command" doesn´t work on USB mode because that command is designed for I2C/SPI mode.

Unfortunately there's no command available to exit the USB ISP mode

So, to reset the chip it needs to be made through hardware.

Let me know if this helps

Best regards,

Omar

karimboallal — Wed, 17 Jun 2020 10:27:49 GMT

Hello,

You can use Watchdog to reboot automatically when it's reach the value (time) you pre-define.

Karim.