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mEDBG USB/Serial Baud rates?
And actually FTDI AN232B-05 confirms that they do use fractional divider. And the formula for calculating the divisor is 3000000 / BAUD.   You can set the divisor to values N...
Tuesday, 27 October 2015 - 05:51
mEDBG USB/Serial Baud rates?
What is "Virtual Baud Value"? Yes, you gave some formula, but what makes you think that your formula is correct?
Tuesday, 27 October 2015 - 05:42
mEDBG USB/Serial Baud rates?
What makes you think that FTDI uses integer divider? I'm pretty sure they have fractional baudrate generator and can achieve much better accuracy.
Tuesday, 27 October 2015 - 04:47
mEDBG USB/Serial Baud rates?
jstampfl wrote:The code I posted above runs on a ATmegaPB Xplained mini and a ATmegaP Xplained mini at 115200 and 1000000. And we have explained why it is the case for ATmega and...
Tuesday, 27 October 2015 - 03:15
mEDBG USB/Serial Baud rates?
Same goes for FTDI. All they can do is convert USB into UART, they would not be worth anything if they could not do it well.
Saturday, 24 October 2015 - 03:31
mEDBG USB/Serial Baud rates?
jstampfl wrote:1.  on the D10 Xplainedmini, I believe the D10 gets it clock from the 32U4, thus the clocks should be in sync. 48 MHz clock is obtained from 8 MHz input clock...
Friday, 23 October 2015 - 15:45
mEDBG USB/Serial Baud rates?
jstampfl wrote:"Does anyone know if the mEDBG chip (ATmega32u4 based) used on the Xplained mini eval boards supports baud rates above 57600 in its USB/Serial bridge code?" But...
Thursday, 22 October 2015 - 15:45
mEDBG USB/Serial Baud rates?
jstampfl wrote:Sorry, I don't have a D10 Xplained mini.  Maybe you can show some code exhibiting the problem. This code, for example: just...
Thursday, 22 October 2015 - 15:43
mEDBG USB/Serial Baud rates?
Well, yes, running mega-mega with one of the megas providing the clock is like running a single device, internal clock bus simply appears on the output pin on one of the devices...
Thursday, 22 October 2015 - 02:09
VERY large ELF file for a UC3C0512C project.
I had the same question, but then did not send it, since I assumed that 29 MB is just inconvenient to communicate. Obviously programmer that understands ELF files will have no...
Wednesday, 21 October 2015 - 20:41
mEDBG USB/Serial Baud rates?
The only reason it works for ATmega328P is that is is clocked from the external clock, which is synchronous with the clock inside EDBG. You are essentially running USART with...
Wednesday, 21 October 2015 - 16:34
mEDBG USB/Serial Baud rates?
Well, it works if you send singe bytes. Now try to send a continuous string of 100 characters without waiting to receive anything, and observe how EDBG misses all of them.
Wednesday, 21 October 2015 - 03:01