- #Eeprom programmer raspberry pi how to
- #Eeprom programmer raspberry pi code
- #Eeprom programmer raspberry pi Pc
With the MKII programmers, our two available options were: Use the GUI (AVR Studio), or do it all in command line. If there is an executable GUI that we have to run to program an IC on a product, then we immediately try to find a command line version of that program and automate as much as possible. Also, we do a lot of AVR programming at SparkFun spread across 50+ products, so the problem was actually a pretty big one that needed a reliable and long term solution. This is a collection of programs and hardware hacks related to mainly Raspberry Pi and Debian Linux.At first glance, one might think, "okay, what's the latest programmer from ATMEL? Can't we just swap them out for the old ones?" With our current programming methods, it turned out to be a bit more complicated than that.
#Eeprom programmer raspberry pi Pc
The values stored in the EEPROM sets the power up output voltage. We can write the 12-bit value to the DAC only or the DAC and the EEPROM. (Refer to page 18-19 spec sheet), uint8_t control_byte = 0b01000000 bits 7-5 are 010 write DAC only, 011 write DAC and EEPROM. First we write a control byte with the following specifications: The MCP4725 DAC is a 12-bit device with values from 0-4095, with 4095 outputting a voltage near Vcc. Power-down mode, the output amplifier can beĬonfigured to present a low, medium, or high TheĭAC reference is driven from VDD directly. The device includes a Power-On-Reset (POR) circuit toĮnsure reliable power-up and an on-board charge Thisįeature is very useful when the DAC device is used asĪ supporting device for other devices in the network. Output is available immediately after power-up.
#Eeprom programmer raspberry pi code
Memory feature enables the DAC device to hold theĭAC input code during power-off time, and the DAC Programmed to the non-volatile memory (EEPROM) by The DAC input and configuration data can be
The MCP4725 is a low-power, high accuracy, singleĬhannel, 12-bit buffered voltage output Digital-to-Analog ConverterĪllows it to achieve rail-to-rail analog output swing. The Raspberry Pi I2C buss is 3.3V while I operated mine at 5V. The boards usually have pull up resistors that need to be disconnected or use a level translator which is what I did. 1 MCP4725 breakout board available from a number of vendors.
#Eeprom programmer raspberry pi how to
Here I'll connect the MCP4725 to Raspberry Pi and illustrate how to program the device. The MCP4725 is a 12-Bit Digital-to-Analog Converter with EEPROM Memory. YouTube video see MCP4725 12-Bit DAC Interface to Raspberry Pi. MCP4725 12-Bit DAC Interface to Raspberry Pi