RS485 使用RTS控制收发不成功一直高电平

[zwjin1210]

RS485 使用RTS控制收发不成功一直高电平

[mjchen1]

請問,你是在linux底下使用嗎 ...??
device tree的pin設定是怎麼設定的 ..??

[zwjin1210]

就是配置RTS引脚

[mjchen1]

可以提供詳細的配置嗎 ...??

[zwjin1210]

/*

• Device Tree Source for MA35D1 IoT Board
• Copyright (C) 2021 Nuvoton Technology Corp.
• The code contained herein is licensed under the GNU General Public
• License. You may obtain a copy of the GNU General Public License
• Version 2 or later at the following locations:
• http://www.opensource.org/licenses/gpl-license.html
• http://www.gnu.org/copyleft/gpl.html
  */

/dts-v1/;

#include "ma35d1.dtsi"

/ {
model = "Nuvoton MA35D1-IoT";

chosen {
	bootargs = "root=/dev/mmcblk1p1 rootfstype=ext4 rw rootwait console=ttyS0,115200n8 rdinit=/sbin/init mem=512M";
};

};

&mem {
device_type = "memory";
reg = <0x00000000 0x80000000 0 0x20000000>; /* DRAM space - 1, size : 512MB DRAM */
};

&gmac1 {
status = "okay";
phy-mode = "rmii";
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_gmac1>;
};

&uart4 {
status = "okay";
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_uart4>;
dmas = <&pdma2 2>,<&pdma2 3>;
dma-names = "tx", "rx";
pdma-enable = <1>; /* Enable PDMA */
};

&uart6 {
status = "okay";
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_uart6>;
dmas = <&pdma2 4>,<&pdma2 5>;
dma-names = "tx", "rx";
pdma-enable = <1>; /* Enable PDMA */
};

&uart5 {
status = "okay";
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_uart5>;
dmas = <&pdma2 6>,<&pdma2 7>;
dma-names = "tx", "rx";
pdma-enable = <1>; /* Enable PDMA */
};

&qspi0 {
status = "okay";
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_qspi0>;
};

&spi0 {
status = "okay";
pinctrl-names = "default";
spi-max-frequency = <30000000>;
pinctrl-0 = <&pinctrl_spi0>;

#address-cells = <1>;
#size-cells = <0>;

spidev0_0: spi@0 {
	compatible = "my_spidev";
	reg = <0>;
	spi-max-frequency = <12000000>;
};	

};

&spi1 {
status = "okay";
pinctrl-names = "default";
spi-max-frequency = <30000000>;
pinctrl-0 = <&pinctrl_spi1>;

#address-cells = <1>;
#size-cells = <0>;

spidev1_0: spi@0 {
	compatible = "my_spidev";
	reg = <0>;
	spi-max-frequency = <12000000>;
};

spidev1_1: spi@1 {
	compatible = "my_spidev";
	reg = <1>;
	spi-max-frequency = <12000000>;
};

};

&spi2 {
status = "okay";
pinctrl-names = "default";
spi-max-frequency = <30000000>;
pinctrl-0 = <&pinctrl_spi2>;

#address-cells = <1>;
#size-cells = <0>;

spidev2_0: spi@0 {
	compatible = "my_spidev";
	reg = <0>;
	spi-max-frequency = <12000000>;
};

spidev2_1: spi@1 {
	compatible = "my_spidev";
	reg = <1>;
	spi-max-frequency = <12000000>;
};

};

&spi3 {
status = "okay";
pinctrl-names = "default";
spi-max-frequency = <30000000>;
pinctrl-0 = <&pinctrl_spi3>;

#address-cells = <1>;
#size-cells = <0>;

spidev3_1: spi@1 {
	compatible = "my_spidev";
	reg = <1>;
	spi-max-frequency = <12000000>;
};	

};

&i2c1 {
status = "okay";
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_i2c1>;

rtc@32 {
    compatible = "epson,rx8010";
    reg = <0x32>;
};  

};

&pinctrl {

gmac1 {
	pinctrl_gmac1: gmac1grp{
		nuvoton,pins =
			<SYS_GPF_MFPL_PF0MFP_RMII1_MDC		&pcfg_emac_3_3V>,
			<SYS_GPF_MFPL_PF1MFP_RMII1_MDIO		&pcfg_emac_3_3V>,
			<SYS_GPF_MFPL_PF2MFP_RMII1_TXEN		&pcfg_emac_3_3V>,
			<SYS_GPF_MFPL_PF3MFP_RMII1_TXD0		&pcfg_emac_3_3V>,
			<SYS_GPF_MFPL_PF4MFP_RMII1_TXD1		&pcfg_emac_3_3V>,
			<SYS_GPF_MFPL_PF5MFP_RMII1_REFCLK	&pcfg_emac_3_3V>,
			<SYS_GPF_MFPL_PF6MFP_RMII1_CRSDV	&pcfg_emac_3_3V>,
			<SYS_GPF_MFPL_PF7MFP_RMII1_RXD0		&pcfg_emac_3_3V>,
			<SYS_GPF_MFPH_PF8MFP_RMII1_RXD1		&pcfg_emac_3_3V>,
			<SYS_GPF_MFPH_PF9MFP_RMII1_RXERR	&pcfg_emac_3_3V>;
	};
};

i2c1 {
	pinctrl_i2c1: i2c1grp{
		nuvoton,pins =
			<SYS_GPN_MFPL_PN4MFP_I2C1_SDA	&pcfg_default>,
			<SYS_GPN_MFPL_PN5MFP_I2C1_SCL	&pcfg_default>;
	};
};

uart4 {
	pinctrl_uart4: uart4grp{
		nuvoton,pins =
			<SYS_GPI_MFPH_PI9MFP_UART4_nRTS	&pcfg_default>,
			<SYS_GPI_MFPH_PI10MFP_UART4_RXD	&pcfg_default>,
			<SYS_GPI_MFPH_PI11MFP_UART4_TXD	&pcfg_default>;
	};
};

uart5 {
	pinctrl_uart5: uart5grp{
		nuvoton,pins =
			<SYS_GPA_MFPH_PA10MFP_UART5_RXD	&pcfg_default>,
			<SYS_GPA_MFPH_PA11MFP_UART5_TXD	&pcfg_default>;
	};
};

uart6 {
	pinctrl_uart6: uart6grp{
		nuvoton,pins =
			<SYS_GPI_MFPH_PI13MFP_UART6_nRTS	&pcfg_default>,
			<SYS_GPI_MFPH_PI14MFP_UART6_RXD		&pcfg_default>,
			<SYS_GPI_MFPH_PI15MFP_UART6_TXD		&pcfg_default>;
	};
};

qspi0 {
	pinctrl_qspi0: qspi0grp{
		nuvoton,pins =
			<SYS_GPD_MFPL_PD0MFP_QSPI0_SS0		&pcfg_default>,
			<SYS_GPD_MFPL_PD1MFP_QSPI0_CLK		&pcfg_default>,
			<SYS_GPD_MFPL_PD2MFP_QSPI0_MOSI0	&pcfg_default>,
			<SYS_GPD_MFPL_PD3MFP_QSPI0_MISO0	&pcfg_default>,
			<SYS_GPD_MFPL_PD4MFP_QSPI0_MOSI1	&pcfg_default>,
			<SYS_GPD_MFPL_PD5MFP_QSPI0_MISO1	&pcfg_default>;
	};
};

spi0 {
	pinctrl_spi0: spi0grp{
		nuvoton,pins =
			<SYS_GPL_MFPH_PL12MFP_SPI0_SS0    &pcfg_default>,
			<SYS_GPB_MFPH_PB9MFP_SPI0_CLK    &pcfg_default>,
			<SYS_GPB_MFPH_PB10MFP_SPI0_MOSI    &pcfg_default>,
			<SYS_GPB_MFPH_PB11MFP_SPI0_MISO    &pcfg_default>;
	};
};

spi1 {
	pinctrl_spi1: spi1grp{
		nuvoton,pins =
			<SYS_GPE_MFPH_PE10MFP_SPI1_SS0    &pcfg_defaulthi>,
			<SYS_GPN_MFPH_PN15MFP_SPI1_SS1    &pcfg_defaulthi>,
			<SYS_GPE_MFPH_PE11MFP_SPI1_CLK    &pcfg_defaulthi>,
			<SYS_GPE_MFPH_PE12MFP_SPI1_MOSI    &pcfg_defaulthi>,
			<SYS_GPE_MFPH_PE13MFP_SPI1_MISO    &pcfg_defaulthi>;
	};
};

spi2 {
	pinctrl_spi2: spi2grp{
		nuvoton,pins =
			<SYS_GPG_MFPH_PG8MFP_SPI2_SS0    &pcfg_default>,
			<SYS_GPM_MFPH_PM11MFP_SPI2_SS1    &pcfg_default>,
			<SYS_GPG_MFPH_PG9MFP_SPI2_CLK    &pcfg_default>,
			<SYS_GPG_MFPH_PG10MFP_SPI2_MOSI    &pcfg_default>,
			<SYS_GPK_MFPL_PK4MFP_SPI2_MISO    &pcfg_default>;
	};
};

spi3 {
	pinctrl_spi3: spi3grp{
		nuvoton,pins =
			<SYS_GPD_MFPL_PD6MFP_SPI3_SS1    &pcfg_default>,
			<SYS_GPG_MFPL_PG5MFP_SPI3_CLK    &pcfg_default>,
			<SYS_GPG_MFPL_PG6MFP_SPI3_MOSI    &pcfg_default>,
			<SYS_GPG_MFPL_PG7MFP_SPI3_MISO    &pcfg_default>;
	};
};

};

[mjchen1]

請問一下,你這個問題,和下面這個問題,是同一個嗎 ...??
如果是同一個,可以在下面這個問題討論就好
#11