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8 years, 1 month ago.
digitalout lpc4078
I wrote next program on qsb4088 board:
- include "mbed.h"
DigitalOut lp9(p9); DigitalOut lp10(p10); DigitalOut lp17(p17); DigitalOut lp19(p19);
int main() { while(1) { lp9 = 1; lp10 = 1; lp17 = 1; lp19 = 1; wait(0.2); lp9 = 0; lp10 = 0; lp17 = 0; lp19 = 0; wait(0.2); } }
I test it on the QSB4088 board and it works, but when i load this program in a home made LPC4078 the digital out pins don't change. What is wrong?
1 Answer
8 years, 1 month ago.
Hi,
How did you flash the binary file to your home made LPC4078 board?
If you use ISP mode for programming, you have to care about the check-sum data in your flash image. (See UM10562 user manual: 38.3.1.1 Criterion for Valid User Code)
In case of the QSB4088, CMSIS-DAP interface firmware add check-sum data during USB drag and drop, so you don't need to worry about this. However, you may have to put check-sum data in your binary file using other tool.
In that case, you can use Checksum utility in LPCXpresso tool.
https://www.lpcware.com/content/forum/download-program-without-ide-