HSERIN and STR - character encoding

[boban]

Hello, I have solved the problem. I have discoverred, that each 3rd character received doesn't correspond to the ASCII code. I have tried to change the speed of the communication and it is working. So the problem was, that some of the bits were not readed correctly. Now I am wondering why at 115200 bps it is working, because in the PIC manual is written, that there is 8% error rate at 4 Mhz and 115200 and at 19200 the error rate is only 0.6 %.

[skimask]

Hello, I have solved the problem. I have discoverred, that each 3rd character received doesn't correspond to the ASCII code. I have tried to change the speed of the communication and it is working. So the problem was, that some of the bits were not readed correctly. Now I am wondering why at 115200 bps it is working, because in the PIC manual is written, that there is 8% error rate at 4 Mhz and 115200 and at 19200 the error rate is only 0.6 %.

If that module you're using is a bit fast, say 5% fast, then that 8% might only be 3% combined, whereas with .6%, might actually be 3.4%.
Could be a bunch of different reasons...