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Desperate: Need to implement software UART on ATmega16L
If you are using a MEGA16, then why don't you use the hardware USART onboard ? Do you have more than one asynchronous channel to implement ?
Friday, 9 July 2004 - 02:15
Desperate: Need to implement software UART on ATmega16L
If you are using a MEGA16, then why don't you use the hardware USART onboard ? Do you have more than one asynchronous channel to implement ?
Friday, 9 July 2004 - 02:15
Slick CRC7 code
Here is the C code that I use (or was going to use) for calculating the CRC7 byte for a MMC command message. The CRC7 Poly is 0x89. The unsigned short value (treg) contains the...
Thursday, 8 July 2004 - 00:58
Slick CRC7 code
Here is the C code that I use (or was going to use) for calculating the CRC7 byte for a MMC command message. The CRC7 Poly is 0x89. The unsigned short value (treg) contains the...
Wednesday, 7 July 2004 - 04:35
MMC Flash Card Data Format
A PC would typically store data to an MMC card in FAT16 data format. Although it's very detailed, here are some basics. 1. Data is stored in data units called Clusters. A "Cluster...
Tuesday, 29 June 2004 - 03:39
Can comment on the OLIMEX AVR-JTAG?
I've had an Olimex JTAG dongle for about 6 months now and it works great. I had to upgrade the firmware in the dongle a few weeks ago because I changed to AVR Studio 4.09. The...
Sunday, 27 June 2004 - 14:43
CRC-7 for MMC Flash
I will post my C source code for the psuedo code this afternoon. Also, keep in mind that when you put a MMC into SPI mode, it automatically turns off the CRC generator/checker. So...
Thursday, 24 June 2004 - 13:41
OT- Overvoltage / Overcurrent Protection of Serial Line
Does your circuit have to "automatically" recover to normal operation after application of 250VAC ? Backfeeding 250VAC into a 12VDC output does not seem like a typical miswiring...
Wednesday, 23 June 2004 - 13:31
Can an AVR output Rs-232 commands?
Of course, you will have to have a TTL-RS232 level converter (chip or discrete). However, the AVR can transmit and receive asynchronous data. This can be done either through...
Friday, 18 June 2004 - 15:58
Can an AVR output Rs-232 commands?
Of course, you will have to have a TTL-RS232 level converter (chip or discrete). However, the AVR can transmit and receive asynchronous data. This can be done either through...
Friday, 18 June 2004 - 15:58
ATJTAGICE mkII (Debugwire) and EEPROM
EEPROM erasure problem has a workaround. The "EESAVE" fuse must be programmed if you intend to keep your EERPOM contents when using the JTAGICE mkII in Debugwire mode. The JTAGICE...
Friday, 18 June 2004 - 14:21
Debug IAR C using JTAGICE MK2 and AVR Studio
AVR Studio version 4.09 works with the JTAGICE mkII. I believe that the IAR C compiler provides a compatable files for symbolic debugging of C code. I know that the ImageCraft C...
Thursday, 17 June 2004 - 17:25

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