I am using STM32F407 to interface a MAX6969 led driver, MAX6969 is usually interfaced using SPI MOSI/MISO lines ..
The problem is!, I am out of connectivity protocols (I2C/I2S/SPI/UART) only USART left and some GPIOs!
Can I use USARTto interface MAX6969 which have DIN, CLK, LE, OE...
My application is a commercial battery powered device.
The 2 most important thing for me is to achieve "accuracy in metering" and "Increase battery life" of my product.
1st thing I'm able to achieve using MSP430FR6047 chip for water metering.
2nd thing is what I'm working on...