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Edited by pu6k1n at 2021-1-28 01:48
Hello! Maybe this will help you. I upgraded, as you said again, upgraded to version 2021010801, but the problem persists, DCma and ACma modes do not work! I return to the old firmware 2019082801, the DCma and ACma modes are working. I opened the device ((. Looked at the signals on optocouplers in DCma mode with firmware 2021010801, data goes from U4 (CS7721CN) through the TxD U5 (PC817) line! On the U9 (74HC595) chip, DCma mode is set (MEA1 = 0, MEA2 = 1, MEA3 = 1, MEA4 = 1, REL = 1, SELECT = 1, RST = 1), which corresponds to the CS7721CN documentation.For some reason, it can be seen that the firmware does not display data on the LCD in DCma mode. (((((((
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