这可以通过查看ESP32和MCP23017的引脚定义和连接图来确定。 配置中断触发模式:根据具体需求,选择MCP23017中断引脚的触发模式。例如,如果需要在引脚状态发生边沿变化时触发中断,可以选择边沿触发模式。如果需要在引脚状态保持为高电平或低电平时触发中断,可以选择电平触发模式。 编写中断处理程序:在ESP32的代码中,编写中断处...
中断触发模式错误:MCP23017支持不同的中断触发模式,如边沿触发和电平触发。需要根据具体需求选择合适的触发模式。 解决中断问题的步骤: 配置引脚:首先,确保将MCP23017的中断引脚正确连接到ESP32的中断引脚。这可以通过查看ESP32和MCP23017的引脚定义和连接图来确定。 配置中断触发模式:根据具体需求,选择MCP23017中断引脚的...
I set up my ESP32 with a MCP23017 over i2C (400kHz) and got it working quite well with Adafruit-library. Everything is working as expected. Then I did some simple measurement to check the HIGH-LOW switch speed and it is really dissapointing. The code below for simply switching that pi...
I have esp32 + MCP 23017 IO connected to 8 + 8 relays modules 5 v. After few hours i lose relays. I am powering everything with a 5 v 10 amp supply. Esp32 powered on the usb plug or from vcc and gnd pins do not make any difference because in both options I lose relays. When...
I have a project with ESP32 and MCP23017, powered from an external 5v PS and it works well: https://github.com/crgarcia12/electroni ... /tree/main I am not sure if this will solve your problems, but I added capacitors to the MCP in case it needs sudden current, and also one ne...
C:\Users\chris\OneDrive\Documents\Arduino\libraries\Adafruit_MCP23017_Arduino_Library\examples\mcp23xxx_blink\mcp23xxx_blink.ino:30:7: note: in expansion of macro 'pinMode' mcp.pinMode(LED_PIN, OUTPUT); ^ C:\Users\chris\AppData\Local\Arduino15\packages\arduino\hardware\esp32\2.0.13\cores...
问题解决了,完美运行,用了mcp23017,l2c协议,采集的按键,忘记初始化了。感谢大佬,用了好几个.nes模拟器,只有这个在esp wroom 32上完美运行 2024-04-21 21:46:01 点赞1 回复 liao52998 回复@liao52998:遇到新问题了,屏幕无法旋转, cfg.offset_rotation = 1;修改改值无反应 2024-04-21 22:22:39 点赞1...
Support for MCP23S17wollewald/MCP23017_WE#12 hpsaturn commentedon Jul 11, 2022 hpsaturn on Jul 11, 2022 I did replicate the same issue in myesp32-c3-devkitm-1, it's true, it fails, but maybe is a board issue? Because the same config with another C3 micro, for example aM5Stamp ...
model: pca9535, pca85xx, mcp23017, aw9523 and mcp23s17 (SPI version) addr: chip i2c/spi address (decimal) port (I2C): use either "system" port (shared with display for example) or "dac" port (system is default) cs (SPI): gpio used for Chip Select speed (SPI): speed of the SP...
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