Attiny13 Software Uart Bascom

Bascom and AVR, Using small AVR's Bascom and AVR, Using small AVR's It does not get much smaller. Take a 'tiny' ATTiny13 SMD eight-pin chip. It has 1k program memory, 64 bytes SRAM, 64 bytes EEPROM. You can use five I/O pins in Bascom. It is tiny, but can run as fast as 20MHz! And it can still be programmed as any other AVR with only the SCK, MISO, MOSI and RESET pins.

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(I have used an SMD Led and current-limiting resistor soldered directly to the chip) Make sure you read the. Try this schematic: Start TWinAvr, and click on Config. These are the fuse settings of a blank ATTiny13: The ATTiny13 starts default with an internal RC oscillator at 9.6 MHz. This is prescaled by 8, giving a clock speed of app.

You can unprogram the CKDIV8 fuse, setting the clock speed to the full 9.6MHz. The ATTiny13 can run as fast as 20MHz, but then you need to set the CKSEL fuses to '00' and an external clock connected to Pin 2 (PB2/CLKI) Try this program to get a flashing Led: 'The ATTiny2313 is used. $regfile = 'ATtiny13.dat' $crystal = 1200000 Config Portb = Output Do Portb = 255 Waitms 50 Portb = 0 Waitms 50 Loop End But the ATTiny can do more.

It has a 10-bit ADC on pins 1, 2, 3 and 7. An example program to read one ADC channel: 'The ATTiny13 is used. $regfile = 'ATtiny13.dat' $crystal = 1200000 Config Portb.2 = Output Led Alias Portb.2 Config Adc = Single, Prescaler = Auto, Reference = Internal Dim Adcin As Word Open 'comb.1:9600,8,n,1' For Output As #1 Open 'comb.0:9600,8,n,1' For Input As #2 Start Adc Do Set Led Waitms 500 'get adc reading on channel 3 (pin 2 on attiny13) Adcin = Getadc(3) Print #1, 'adc ch#3: '; Adcin Reset Led Waitms 500 Loop End A software UART is used to send the ADC readings to the PC. You may use Bascom's terminal program to display the results (Tools/Terminal emulator; then in the terminal emulator, do Terminal/Settings and set port to Com1 and speed to 9600 baud) Although in the program comb.0 is opened as input, it is not used in the program, but you could try sending commands to the ATTiny13. This program takes up slightly more than 50% of the ATTiny13 flash memory. So, for 'tiny' tasks it fits the bill nicely!

Thank you so much for the nice work! I tried to compile the program using the command (I changed the value of the MCU to “MCU=attiny13a” in the uart.h file as well): $sudo avr-gcc -Wall -g -Os -mmcu=attiny13a -DF_CPU=1200000 -I.

Live TV from 60+ channels. No complicated set-up. No cable box required. Cancel anytime. Feb 25, 2015  Program UART on ATtiny13. I showed an example of software UART for ATtiny13 and thus used the Arduino IDE as a development environment. ATtiny13 is clocked from the internal RC circuit.