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Question
tarifa
hello dear folks,
the UART-use is somewhat interesting: we hafe pin id as paramter directly, eg:
u=UART(1,9600,tx=4,rx=5)
But in SPI/I2C, it is use pin object, eg:
i2c=I2C(1,sda=Pin(14),scl=Pin(15))
i see some issues here:
- Not all ports support is set eg the tx/rx pins
- some of the existing ports (e.g. esp8266) are related to a so called machine.Pin while others (e.g. esp32) take a pin number.
from what i see in the docs:
cf the docs https://docs.espressif.com/projects/esp-idf/en/latest/api-reference/peripherals/uart.html
Configuration example:
const int uart_num = UART_NUM_2; uart_config_t uart_config = { .baud_rate = 115200, .data_bits = UART_DATA_8_BITS, .parity = UART_PARITY_DISABLE, .stop_bits = UART_STOP_BITS_1, .flow_ctrl = UART_HW_FLOWCTRL_CTS_RTS, .rx_flow_ctrl_thresh = 122, }; // Configure UART parameters ESP_ERROR_CHECK(uart_param_config(uart_num, &uart_config)); any idea why this is so.
any idea why this is so...
Link to comment
https://www.neowin.net/forum/topic/1387074-esp32-different-use-of-uart-pins-id-as-paramter-directly/Share on other sites
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