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alexan_e
alexan_e's Blog
Long integer to string function
alexan_e
Updated
4 min read
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1K
Comments
1
AVR
This is a custom function to convert a number to the ASCII representation /***************************************************************************** ** Function name: ULongToStr ** ** Descriptions: converts an unsigned long to ASCII characters and stores the result to a char array...
alexan_e
alexan_e's Blog
8/16 bit value reverting function (11000000 to 00000011)
alexan_e
1 min read
Views
810
AVR
Fast value reverting function for 8-bit char and 16-bit integer, it uses a lookup table for each nibble (4-bits). /***************************************************************************** ** Function name: reverse_byte ** ** Descriptions: reverts the bits of a byte b0->b7, b1->b6...
alexan_e
alexan_e's Blog
PWM in ATMEGA
alexan_e
1 min read
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1K
AVR
The atmega has a few different PWM modes, the frequency and duty ratio depend on the mode and values used, this is a description of the way to calculate them. In fast PWM top=ICR1, the output PWM frequency=timer clock/(ICR1+1) and the duty=OCR1A(B)/ICR1 In fast PWM top=0h00ff, the output...
alexan_e
alexan_e's Blog
Write/read the internal EEPROM in AVR using avrgcc (winAVR)
alexan_e
3 min read
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1K
AVR
The following macro can be used to simplify the process of using the internal AVR EEPROM #include <avr/eeprom.h> // defines for eeprom access #define read_eeprom_byte(address) eeprom_read_byte ((const uint8_t*)address) #define write_eeprom_byte(address,value) eeprom_write_byte...

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