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Fix a broken link as well as updating the text. Merges https://github.com/espressif/esp-idf/pull/4531
SPI master example
This code displays some simple graphics with varying pixel colors on the 320x240 LCD on an ESP-WROVER-KIT board.
If you would like to adopt this example to another type of display or pinout check [main/spi_master_example_main.c] for comments that explain some of the implementation details.