This driver does not try to hold a full framebuffer. For resource-constrained MCUs (like the CH32V003 or STM32F0 series), JXMCU writes pixels directly to the bus. It cut my RAM usage from 150KB to just 12KB.
In the industrial world, refers to a brand of specialized PLC programming cables jxmcu driver work
void jxmcu_gpio_set_mode(uint8_t pin, uint8_t mode) = (mode << (pin * 2)); // Set new mode (00: input, 01: output) *GPIOA_MODER = reg; This driver does not try to hold a full framebuffer