Avrdude and eeprom? If you are using the standard Arduino bootloader... it does not support EEPROM.
I have a stk500v1 boot loader which does so. I have been planning to publish it for a while, but...
Monday, 18 March 2013 - 00:44
NTC ADC problem Sounds like your confusing degrees Kelvin and degrees Centigrade
Monday, 18 March 2013 - 00:31
USB based product - what protective devices to put in? 1: Fuse, definitely. You never know what you customers will try to do, and you can't depend that everything that looks like a USB connector actually is a standard USB connector....
How to measure the Back-Up Battery Voltage Something like this simple circuit might work.
The threshold voltage must be less than the difference between 5 volts and the battery voltage. If a CR2032, for example, you need...
Wednesday, 13 March 2013 - 09:52
Communication problem with wireless modules Something I don't see in the picture, are capacitors. Those modules need 1 uF or so on the supply pins, if I remember correctly.
Friday, 8 March 2013 - 21:29
Burn bootloader and a program at the same time There's a lot of threads on here about how to put application and boot loader together in a single .hex file, to be written in a single 'burn'.
That seems like a hassle, when it...
Friday, 8 March 2013 - 11:12
Tardy bus responses causing problems, odd behavior observed Declare 'prevByte' static.
Without the debug statement, you are processing 0 or 1 new byte on each call to devCheckRxData(), and 'prevByte' has forgotten what the previous byte...
Thursday, 7 March 2013 - 11:04
Tardy bus responses causing problems, odd behavior observed Well, that's a start, but you really have provided little additional information, beyond that a message ends with cr/lf.
If an entire message will fit in your buffer, perhaps you...
Wednesday, 6 March 2013 - 23:09
UART/HyperTerm: I *THINK* This Is a New One Though its possible, I don't think this can be blamed on the RC oscillator in this case.
The fact you poked varying values into OSCCAL seems to bear this out.
I would try a...
Wednesday, 6 March 2013 - 22:43
The usual external clock lockout accident... Back in the day, I used to scrounge components anywhere I could find em. Ride my bicycle down the streets on trash pickup day, looking for tossed out TV sets, radios, record...
If you are using the standard Arduino bootloader... it does not support EEPROM. I have a stk500v1 boot loader which does so. I have been planning to publish it for a while, but...
Sounds like your confusing degrees Kelvin and degrees Centigrade
1: Fuse, definitely. You never know what you customers will try to do, and you can't depend that everything that looks like a USB connector actually is a standard USB connector....
Change usart_getc() to return a signed int, return -1 if nothing is available in the buffer. That way you know if usart_getc() returns a valid value, or a 'true null'.
Something like this simple circuit might work. The threshold voltage must be less than the difference between 5 volts and the battery voltage. If a CR2032, for example, you need...
Something I don't see in the picture, are capacitors. Those modules need 1 uF or so on the supply pins, if I remember correctly.
There's a lot of threads on here about how to put application and boot loader together in a single .hex file, to be written in a single 'burn'. That seems like a hassle, when it...
Declare 'prevByte' static. Without the debug statement, you are processing 0 or 1 new byte on each call to devCheckRxData(), and 'prevByte' has forgotten what the previous byte...
Well, that's a start, but you really have provided little additional information, beyond that a message ends with cr/lf. If an entire message will fit in your buffer, perhaps you...
Though its possible, I don't think this can be blamed on the RC oscillator in this case. The fact you poked varying values into OSCCAL seems to bear this out. I would try a...
Back in the day, I used to scrounge components anywhere I could find em. Ride my bicycle down the streets on trash pickup day, looking for tossed out TV sets, radios, record...
Perhaps some information on the message structure and transmission protocol would help.
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