MicroPython Forum (Archive)

According to the previous modification, if only UART is connected and USB is not connected, the repl speed of UART will be very slow and not practical Try the following modifications to make USB and UART work at the same time: 1. main.c 83 line #if CONFIG_USB_ENABLED usb_init(); #endif uart_init(); ...

Try the following modifications to make USB and UART work at the same time: 1. main.c 83 line #if CONFIG_USB_ENABLED usb_init(); #endif uart_init(); 2. mphalport.c 121 line #if CONFIG_USB_ENABLED usb_tx_strn(str, len); #endif for (uint32_t i = 0; i < len; ++i) { uart_tx_one_char(str ); } After modif...

I also encounter the same problem. After compiling and enabling USB, the repl of serial port will no longer respond

from machine import Pin from esp32 import RMT import time rmt=RMT(1,pin=Pin(18),clock_div = 80) rmt.loop(1) pulse=1500 cycle=20000 rmt.write_pulses((pulse,cycle-pulse),start=1) for j in range(100): for i in range(200): time.sleep_ms(18) pulse=500+i*10 rmt.write_pulses((pulse,cycle-pulse),start=1)

It seems that in the existing firmware, RMT module can easily provide high-precision actuator drive

Resolution up to 1US should be feasible

Look forward to the integration of this feature

I currently use esp32, and I think it's more convenient to upload files by FTP

If you are using framebuf to implement the display driver, you can consider trying my framebuf enhancement https://github.com/wangshujun-tj/mpy-Framebuf-boost-code Support 8 × 8, 6 × 12, 8 × 16, 12 × 24, 16 × 32 font size, and can also enlarge up to 4 times, fully meet the needs of large font, chara...

Question 1: Warning will be prompted at startup, and the subsequent operation will be normal WARNING: Could not sync device's clock: can't import name RTC WARNING: Could not validate time: can't import name RTC MicroPython v1.14-172-gf842a40df-dirty on 2021-04-18; Raspberry Pi Pico with RP2040 Type ...

This situation is determined by the internal circuit of the chip. As described in the manual, the internal DAC output goes through an operational amplifier to the pin, and it is difficult to achieve the rail to rail output with this structure The DAC of STM32 has a similar feature after the buffer i...