Sorry I haven't tried 3 serial ports. I have tested 2 serial ports on BL602: https://lupyuen.github.io/articles/ikea
Lup On Tue, Mar 22, 2022 at 3:04 PM prelude <wgz_z...@163.com> wrote: > A board of our own imxrt1052, refer to > nuttx/boars/arms/imxrt/imxrt1050-evk, and plan to use these serial ports > > /* LPUART1 */ > #define GPIO_LPUART1_RX (GPIO_LPUART1_RX_1|IOMUX_UART_DEFAULT) /* > GPIO_AD_B0_13 */ > #define GPIO_LPUART1_TX (GPIO_LPUART1_TX_1|IOMUX_UART_DEFAULT) /* > GPIO_AD_B0_12 */ > > /* LPUART2 */ > #define GPIO_LPUART2_RX (GPIO_LPUART2_RX_1|IOMUX_UART_DEFAULT) /* > GPIO_AD_B1_03 */ > #define GPIO_LPUART2_TX (GPIO_LPUART2_TX_1|IOMUX_UART_DEFAULT) /* > GPIO_AD_B1_02 */ > > /* LPUART3 */ > #define GPIO_LPUART3_RX (GPIO_LPUART3_RX_1|IOMUX_UART_DEFAULT) /* > GPIO_AD_B1_07 */ > #define GPIO_LPUART3_TX (GPIO_LPUART3_TX_1|IOMUX_UART_DEFAULT) /* > GPIO_AD_B1_06 */ > > /* LPUART4 */ > #define GPIO_LPUART4_RX (GPIO_LPUART4_RX_1|IOMUX_UART_DEFAULT) /* > GPIO_SD_B1_01 */ > #define GPIO_LPUART4_TX (GPIO_LPUART4_TX_1|IOMUX_UART_DEFAULT) /* > GPIO_SD_B1_00 */ > > /* LPUART8 */ > #define GPIO_LPUART8_RX (GPIO_LPUART8_RX_1|IOMUX_UART_DEFAULT) /* > GPIO_AD_B1_11 */ > #define GPIO_LPUART8_TX (GPIO_LPUART8_TX_1|IOMUX_UART_DEFAULT) /* > GPIO_AD_B1_10 */ > > UART1 is used as the console, but in the process of using it, it is found > that if three or more serial ports are selected in the menconfig > configuration, the console cannot be opened. If two serial ports are > selected, the console will be opened normally. Have you encountered it? >
