Comments on: Light and Temperature Logger http://uart.net/2008/06/12/light-and-temperature-logger/ universal asynchronous receiver/transmitter Tue, 14 Jul 2009 07:43:54 +0000 hourly 1 http://wordpress.org/?v=3.0.3 By: Giacomo http://uart.net/2008/06/12/light-and-temperature-logger/comment-page-1/#comment-162 Giacomo Tue, 14 Jul 2009 07:43:54 +0000 http://uart.net/?p=29#comment-162 Hi Ned, fortunately I solved the problem some mounth ago...It was the ADC!!! Thank you for your interesting!!! Hi Ned,
fortunately I solved the problem some mounth ago…It was the ADC!!!
Thank you for your interesting!!!

]]> By: ned http://uart.net/2008/06/12/light-and-temperature-logger/comment-page-1/#comment-70 ned Tue, 07 Apr 2009 20:58:36 +0000 http://uart.net/?p=29#comment-70 Hi Giacomo, There are a two potential problems assuming your UART module is enabled properly and all your interrupt priorities are correct (if you are using interrupts): Your re-mappable pins aren't assigned right. They should be RPINR18bits.U1RXR = 2; RPOR1bits.RP3R = 3; assuming you are using UART1 and RX = RP2, TX = RP3. You didn't disable the ADC on those ports (they are enabled by default). AD1PCFG = 0xFFFF; will disable them all. This one is a very common gotcha, all digital I/O reads will fail unless the port has its ADC channel disabled. Let me know if that solves it for you. If not post your UART module init code and I'll take a look. Hi Giacomo,

There are a two potential problems assuming your UART module is enabled properly and all your interrupt priorities are correct (if you are using interrupts):

Your re-mappable pins aren’t assigned right. They should be RPINR18bits.U1RXR = 2; RPOR1bits.RP3R = 3; assuming you are using UART1 and RX = RP2, TX = RP3.

You didn’t disable the ADC on those ports (they are enabled by default). AD1PCFG = 0xFFFF; will disable them all. This one is a very common gotcha, all digital I/O reads will fail unless the port has its ADC channel disabled.

Let me know if that solves it for you. If not post your UART module init code and I’ll take a look.

]]> By: Giacomo http://uart.net/2008/06/12/light-and-temperature-logger/comment-page-1/#comment-69 Giacomo Tue, 07 Apr 2009 17:06:49 +0000 http://uart.net/?p=29#comment-69 Can anybody help me? I can't use UART on my pic24Fj64ga002!!! Tx pin on rp3 work correctly...but Rx on rp2 can't work! It only works if I set the loopback mode... it seems to have con connection on multiplexed pins! Configuration words are ok. and also electronics connections...it's only a wire! I've also tried to short circuit Rx and Tx, but it can't hear! I have no other modules enabled, only UART1, and an I/O driving a LED. ...please help me! I'm becoming mad! I forgot...well good! a nice project!!! Can anybody help me?
I can’t use UART on my pic24Fj64ga002!!!
Tx pin on rp3 work correctly…but Rx on rp2 can’t work! It only works if I set the loopback mode… it seems to have con connection on multiplexed pins!
Configuration words are ok.
and also electronics connections…it’s only a wire! I’ve also tried to short circuit Rx and Tx, but it can’t hear!
I have no other modules enabled, only UART1, and an I/O driving a LED.

…please help me! I’m becoming mad!

I forgot…well good! a nice project!!!

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