数字IO口通过IO_MUX复用器来选择通用IO口还是复用外设功能，然后进过GPIO matrix交换矩阵来关联到具体的外设中 图中也可以配置不进过交换矩阵，这样可以提高引脚的高频特性【如高速率 UART SPI SDIO】GPIO配置的流程 配置外设信号寄存器GPIO_FUNC_IN_SEL_CFG，选择需要配置的PIN脚 设置GPIO_ENABLE_
gpio_matrix_out(PIN_SMI_MDIO, EMAC_MDO_O_IDX, 0, 0); gpio_matrix_in(PIN_SMI_MDIO, EMAC_MDI_I_IDX, 0); set the Direction BIT of the GPIO in this example MDIO is in and output https://esp32.com/viewtopic.php?f=12&p=6422#p6401 ? we need to set the BIT again for input...
It would help if I could find the c code for gpio_matrix_in and gpio_matrix_out. I have searched the esp/components folder and cannot find the source code for these functions. They are not in gpio.c. Where is that code?WiFive Posts: 3529 Joined: Tue Dec 01, 2015 7:35 am Re: ...
The ESP32 series chips all have a GPIO matrix, which means that (with the exception of some very specific peripherals) you can route any peripheral signal to any GPIO. In practice, this means you can use any GPIO (that is not otherwise occupied) as a LED_PWM output....
gpio_matrix_in(GPIO_NUM_5, SIG_GPIO_IN_IDX, false);```6. 使用UART发送和接收数据：```c c...
There are some entries (Core1_gpio_inx; Core1_gpio_outx; pro_alonegpio_inx; pro_alonegpio_outx) in the GPIO matrix list that let me believe thay are for dedicated GPIO. But the reference states that the "IO MUX and GPIO Matrix (GPIO, IO_MUX)" parts is published while there is...
There are so many different sources for interrupts in the ESP32 interrupt matrix. The Interrupt Matrix embedded in the ESP32 independently allocates peripheral interrupt sources to the two CPUs’ peripheral interrupts. It does accept 71 peripheral interrupt sources as input. And it generates 26 peri...
hzeller / rpi-rgb-led-matrix Star 4k Code Issues Pull requests Controlling up to three chains of 64x64, 32x32, 16x32 or similar RGB LED displays using Raspberry Pi GPIO raspberry-pi gpio rgb-panels led-panels multiplexing Updated May 10, 2025 C++ ...
GPIO Matrix SigIn ID: (simple GPIO input) SleepSelEn: 1 IO[18] - Pullup: 0, Pulldown: 0, DriveCap: 2 InputEn: 0, OutputEn: 1, OpenDrain: 0 FuncSel: 1 (GPIO) GPIO Matrix SigOut ID: 256 (simple GPIO output) SleepSelEn: 1 ...
ESP8266 SDK开发: 外设篇-GPIO输出高低电平 GPIO_OUTPUT_SET(gpio_no, bit_value) 设置GPIO2输出高电平 GPIO_OUTPUT_SET(2, 1); 设置GPIO2输出低电平 GPIO_OUTPUT_SET(...(2, 1);//设置GPIO2输出高电平 ?...测试(GPIO2输出低电平,GPIO5输出高电平控制继电器吸合) #include "gpio.h" GPIO_OUTPUT_SET...