Hi forum,
Two quick questions, processor MSP430F4132, 125 lcd segments driven, one SPI port used, one I2C port used (appear to not be conflicted),
1. Port pins P1.6 and P1.7 appear to be free of LCD drive and available for interrupt use. Only two interrupts are needed for this design, which is non-life threat and very low key. Are these interrupt lines actually available for use?
2. How long does it take in uS to start the interrupt program, release the interrupt line, increment one binary number, change it to bcd, and send it to the LCD register?
Thank you in advance, and have a great day!
Robert.