![]() My new boss had been saving up such a task for the new guy, with the specific intent of making me fail as a lesson. On my first day, I was handed a prototype of a dot-matrix LCD display, manufactured by Seiko, which I had been asked to test and to get working in four-bit mode. Thirty years ago, I was handed such a task as my first assignment, fresh out of high school and into a R&D lab designing video game support hardware. THE BROAD OVERVIEWĬonnecting a display to a microcontroller for the first time can be one of the most difficult activities in any project. Working at it from scratch can be daunting so we spend time this month going in-depth to give you a better understanding. SPI is a complicated protocol that usually requires specialist knowledge, high-level libraries and module familiarity with the chip being talked to. ![]() ![]() Part two of our Serial to SPI converter demystifies the SPI protocol and gives you the tools to tackle new peripherals from scratch. This month, we connect the programmer to displays and go further in depth on how to program microcontrollers. In Issue 25, we built the Serial to SPI Programmer.
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