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Quote:but I can't seem to get anything to work! How do you know it? do you connect it with computer or another AVR? Should know that AVR is at TTL level and computer is RS232...
Thursday, 27 March 2008 - 04:14
Uart communication
Quote:Did I need to do anything special with the CTS and RTS lines from the ft232s? CTS and RTS are need only if you want a handshaking-type communication. Usually it is used to...
Thursday, 27 March 2008 - 04:02
AVR modem
Quote: how can I differentiate two frequencies like 1200 and 1400 Hz by filtering input signal? What kind of input signal? is it sine? square? logic level compatible with AVR? I...
Thursday, 27 March 2008 - 03:37
Newby needs tips getting a 2560 to run
Use code tag please.. int main() { long l; DDRL = 0xFF; while(1) { for( l=0; l
Thursday, 27 March 2008 - 03:27
yet another program memory question
prog_uint8_t my_data[]= {1,2,3,4,5,6}; Hei, i don't know this kind of identifier... prog_uint8_t, what does it mean? is it mean something like uint8_t PROGMEM? I don't...
Thursday, 27 March 2008 - 03:07
yet another program memory question
Pulling data out from program memory space must use pgm_read_byte(&yourconst); maybe simple like this: const char yourconst[10] PROGMEM = {1,2,3,4,5,6}; char[10] buffer = {...
Wednesday, 26 March 2008 - 08:35
Reg font generator
Quote: Does that mean i should add the "#define flash const" preprocessor directive Yes, you should if you want to maintain compatibility between CodeVision and GCC source code...
Wednesday, 26 March 2008 - 08:23
m23402027 wrote:The optimization donSolved. I use static inline in every my header of my functions inside my library.
Tuesday, 25 March 2008 - 06:41
The optimization don't work well in a case like this: I included a library (my own library), but i use only 1 function among those in library, the compiler seems to compile the...
Tuesday, 25 March 2008 - 05:03
DC motor driver circuit: do I have this right?
Hei, you still can use PNP even it is controlled with 5 volt! I've done this. The trick is using pull up resistor. Connect pin 1 of resistor to base of transistor and to uC. Then...
Tuesday, 18 March 2008 - 03:12
Error Programmers power supply is disconnected
[off topic] a little bit funny, since there are 2 Jims here, the one has signature Jim and the other has 'the other Jim' :D
Tuesday, 11 March 2008 - 07:38
Calm ahmed, my idea is gating each I/O signal. MOSI, MISO, SCK, so you had to use 3 gates. Put the output of Gate A to SI of LCD, input A of Gate A to MOSI of AVR. output of Gate...
Tuesday, 11 March 2008 - 04:45