Precautions for debugging a four-wire resistive touch screen driver

Based on "optimization of four-wire resistive touch screen drive", the sensitivity parameters of handwritten input are adjusted too low, which is better than the original one, as shown in, 72/s can be achieved now. Generally, the writing speed is about 60/s, so it should be able to meet the vast majority of requirements.

The CPU usage is slightly higher than the original one, as shown in.

In general, you need to consider the following three issues when debugging the touch screen DRIVER:

• Whether the writing speed is smooth and the handwriting is smooth
• Whether there is jitter or jump on time
• CPU usage when you click the touch screen or slide

Seek a balance between the three issues to achieve the best effect.