tinkerboard s Tinker Board S RS232 PIN connection

[Tolga 0]

Hello friends,

We are trying to connect rs232 ( weight bridge ) with PIN. We use debian software for Tinker board S. We have to read  COM Port. We successful if we use USB cable.

 

 

 

[tooz 47]

hello @Tolga, 

please refer to the setting below. It’s not necessary to use uart1, uart2 or uart4 can be used, too.

Using uart3 however is not suggested, since it’s used for uart log output

 

https://github.com/TinkerBoard/TinkerBoard/wiki/User-Guide#gpio-config-table-for-tinker-board-and-tinker-board-s

 

• First, modify the /boot/config.txt file as follows, and then reboot to enable I2C1 and I2C4.

##### Hardware Interface Config #######

Note: fiq_debugger and uart3 use the same pin. Set fiq_debugger first while bb oth on. ##

## Note: uart4 and spi0 are the same pins. Set the latter one while both on. ##

## Note: uart2 is the same pins to pwm2 and pwm3. Set the latter one while both on. ##

 

intf:fiq_debugger=on

intf:i2c1=on

intf:i2c4=on

#intf:spi0=off

#intf:spi2=off

#intf:pwm2=off

#intf:pwm3=off

intf:pcm_i2s=on

intf:uart1=on

#intf:uart2=off

#intf:uart3=off

#intf:uart4=off

 

 

Chip,line	Device Path	GPIO number	Function2	Function1	GPIO	Pin#	Pin#	GPIO	Function1	Function2	GPIO number	Device Path	Chip,line
---	---	---	---	VCC3.3V_IO	---	1	2	---	VCC5V_SYS	---	---	---	---
8,4	GPIO:/sys/class/gpio/gpio252 I2C:/dev/i2c-1	252	---	I2C1_SDA	GPIO8_A4	3	4	---	VCC5V_SYS	---	---	---	---
8,5	GPIO:/sys/class/gpio/gpio253 I2C:/dev/i2c-1	253	---	I2C1_SCL	GPIO8_A5	5	6	---	GND	---	---	---	---
0,17	GPIO:/sys/class/gpio/gpio17	17	---	TEST_CLKOUT	GPIO0_C1	7	8	GPIO5_B1	UART1_TXD	---	161	GPIO:/sys/class/gpio/gpio161 UART:/dev/ttyS1	5,9
---	---	---	---	GND	---	9	10	GPIO5_B0	UART1_RXD	---	160	GPIO:/sys/class/gpio/gpio160 UART:/dev/ttyS1	5,8
5,12	GPIO:/sys/class/gpio/gpio164 SPI:/dev/spidev0 UART:/dev/ttyS4	164	UART4_CTSN	SPI0_CLK	GPIO5_B4	11	12	GPIO6_A0	I2S_SCLK	---	184	GPIO:/sys/class/gpio/gpio184	6,0
5,14	GPIO:/sys/class/gpio/gpio166 SPI:/dev/spidev0 UART:/dev/ttyS4	166	UART4_TXD	SPI0_TXD	GPIO5_B6	13	14	---	GND	---	---	---	---
5,15	GPIO:/sys/class/gpio/gpio167 SPI:/dev/spidev0 UART:/dev/ttyS4	167	UART4_RXD	SPI0_RXD	GPIO5_B7	15	16	GPIO5_B2	UART1_CTSN	---	162	GPIO:/sys/class/gpio/gpio162 UART:/dev/ttyS1	5,10
---	---	---	---	VCC3.3V_IO	---	17	18	GPIO5_B3	UART1_RTSN	---	163	GPIO:/sys/class/gpio/gpio163 UART:/dev/ttyS1	5,11
8,9	GPIO:/sys/class/gpio/gpio257 SPI:/dev/spidev2	257	---	SPI2_TXD	GPIO8_B1	19	20	---	GND	---	---	---	---
8,8	GPIO:/sys/class/gpio/gpio256 SPI:/dev/spidev2	256	---	SPI2_RXD	GPIO8_B0	21	22	GPIO5_C3	---	---	171	GPIO:/sys/class/gpio/gpio171	5,19
8,6	GPIO:/sys/class/gpio/gpio254 SPI:/dev/spidev2	254	---	SPI2_CLK	GPIO8_A6	23	24	GPIO8_A7	SPI2_CSN0	---	255	GPIO:/sys/class/gpio/gpio255 SPI:/dev/spidev2.0	8,7
---	---	---	---	GND	---	25	26	GPIO8_A3	SPI2_CSN1	---	251	GPIO:/sys/class/gpio/gpio251 SPI:/dev/spidev2.1	8,3
7,17	GPIO:/sys/class/gpio/gpio233 I2C:/dev/i2c-4	233	---	I2C4_SDA	GPIO7_C1	27	28	GPIO7_C2	I2C4_SCL	---	234	GPIO:/sys/class/gpio/gpio234 I2C:/dev/i2c-4	7,18
5,13	GPIO:/sys/class/gpio/gpio165 SPI:/dev/spidev0.0	165	UART4_RTSN	SPI0_CSN0	GPIO5_B5	29	30	---	GND	---	---	---	---
5,16	GPIO:/sys/class/gpio/gpio168 SPI:/dev/spidev0.1	168	---	SPI0_CSN1	GPIO5_C0	31	32	GPIO7_C7	UART2_TXD	PWM	239	GPIO:/sys/class/gpio/gpio239 UART:/dev/ttyS2 PWM:/sys/class/pwm/pwmchip3	7,23
7,22	GPIO:/sys/class/gpio/gpio238 UART:/dev/ttyS2 PWM:/sys/class/pwm/pwmchip2	238	PWM2	UART2_RXD	GPIO7_C6	33	34	---	GND	---	---	---	---
6,1	GPIO:/sys/class/gpio/gpio185	185	---	I2S_LRCKRX	GPIO6_A1	35	36	I2S_LRCKRX	UART3_RXD	---	233	GPIO:/sys/class/gpio/gpio223 UART:/dev/ttyS3	7,7
7,8	GPIO:/sys/class/gpio/gpio224 UART:/dev/ttyS3	224	---	UART3_TXD	GPIO7_B0	37	38	GPIO6_A3	I2S_SDI	---	187	GPIO:/sys/class/gpio/gpio187	6,3
---	---	---	---	GND	---	39	40	GPIO6_A4	I2S_SDO0	---	188	GPIO:/sys/class/gpio/gpio188	6,4

 

 

 

[Tolga 0]

thank you for your answer tooz