Hello PJ...
The change in the .dts file was sufficient... Had a little bug, which prevented it from working, after everything was set up in the hoggrp node...;)
Thanks alot
Posts by joti
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so, I changed the .dts to
#ifdef CONFIG_PICOCOMA9X_UART_A
pinctrl_uart4_1: uart4grp-1 {
fsl,pins = <
MX6SX_PAD_SD3_CMD__UART4_TX 0x1b0b1
MX6SX_PAD_SD3_DATA3__UART4_RX 0x1b0b1
#ifdef CONFIG_PICOCOMA9X_UART_A_RTSCTS
MX6SX_PAD_SD3_CLK__UART4_RTS_B 0x1b0b1
MX6SX_PAD_SD3_DATA2__UART4_CTS_B 0x1b0b1
#endif
>;
};
#endif
and added GPIO192 in the hoggrp node...
/* GPIO 192 */
MX6SX_PAD_SD3_CLK__GPIO7_IO_0 0x0b0b0 //(Pull Up)
/* GPIO 196 */
MX6SX_PAD_SD3_DATA2__GPIO7_IO_4 0x030b0 //(Pull Down)
but still no sucsess...
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Hello HK...
Ok... Pin 13 is out the question...;) For the pin configuration of GPIO192, I never touched the hoggrp node for this pin, but I had to alter something to be able to use gpio196 ( Problem switching GPIO196 )... Do I have to do something simular for the 192?
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Hello F&S Team...
I have trouble switching GPIO192 and GPIO13 using a PCOMA9X-V3I-LIN. I'm not able to control the pin via direct programming or with using the console. Maybe you have an idea what keeps me from using GPIO192 and GPIO 13... Both Ethernet, all RTS/DTS, Audio etc. are switched off in the Devicetree...
Also is there a reliable way to check the value-state of a given the GPIO Pin... For instance i can switch GPIO196 perfectly, but if I try to read the state via the console, the result does not represent the actual state of the pin...
Thanks in advance...
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Hello PJ...
Thanx for the quick response... GPIO196 Up and working...;)
Best regards...
Jochen
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Hello F&S Team...
I have trouble switching GPIO196 using a PCOMA9X-V3I-LIN. I have switched of the UART_A_CTS in the DeviceTree, but I'm not able to control the pin via direct programming or with using the console. Maybe you have an idea what keeps me from using GPIO196 (other GPIOs work fine, btw...)
Thanx in advance...
jochen
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Hello PJ...
It didn't show up in the /dev... That was my main problem... But meanwhile I got it working... first I got rid of the #define CONFIG_PICOCOMA9X_EMMC in the picocoma9x.dts which solved the -16 error, but didn't solve the problem, that the SD card didn't show up in /dev... I also had to get rid of the #define CONFIG_PICOCOMA9X_SD_A_CD line and after that everything worked fine...;)
But thanks anyways...;)
Jochen
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Hello PJ...
Yes I'm using fsimx6sx-V2.1... And at the moment my PICOMA9 is residing in your starterinterface
not sure about the eMMC... I think its your standard PICOMA9X board...
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Hello Everyone...
I'm having trouble accessing the SD-Card... During boot the carddriver detects it, but throws an:
mmc1: SDHCI controller on 2194000.usdhc [2194000.usdhc] using ADMA
sdhci-esdhc-imx: probe of 219c000.usdhc failed with error -16
anyone?
Tested different working cards of different sizes, but no success..Thanx in advance,
jochen
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Hello fs-support_HK
The code is embedded in my 1st post...;)
But its still work-in-progress...
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Hello everyone...
I have a little problem configuring the UART. I need to open 2 serial connections. The first port I tried (/dev/ttymxc3) works as expected, but when I open /dev/ttymxc2 with the same code, the received data gets stripped of the 7th bit... The port should be a RAW 9600 8Odd1 port with XON/XOFF Flowcontrol...
Display MoreCode- #define SERIAL_A "/dev/ttymxc3"
- #define SERIAL_B "/dev/ttymxc2"
- int init_UART_A (void)
- {
- char *portname = SERIAL_A; // Serial1 Portname für Serial 2 ttymxc2
- static int fd;
- struct termios tty;
- fd = open(portname, O_RDWR | O_NOCTTY | O_NDELAY);
- if (fd < 0)
- {
- printf("Error opening %s: %s\n", portname, strerror(errno));
- return -1;
- }
- fcntl(fd, F_SETFL, 0);
- if (tcgetattr(fd, &tty) < 0)
- {
- printf("Error from tcgetattr: %s\n", strerror(errno));
- return -1;
- }
- cfmakeraw(&tty);
- cfsetospeed(&tty, B9600);
- cfsetispeed(&tty, B9600);
- tty.c_cflag |= (CLOCAL | CREAD); /* ignore modem controls */
- tty.c_cflag |= PARENB; /* no parity bit */
- tty.c_cflag |= PARODD; /* Parity ODD */
- tty.c_cflag &= ~CSTOPB; /* only need 1 stop bit */
- tty.c_cflag &= ~CSIZE; /* Mask the character size bits */
- tty.c_cflag |= CS8; /* 8-bit characters */
- tty.c_cflag &= ~CRTSCTS; /* no hardware flowcontrol | */
- tty.c_iflag |= (IXON | IXOFF | IXANY);
- tty.c_iflag |= (INPCK | ISTRIP);
- tty.c_oflag |= OPOST;
- /* fetch bytes as they become available */
- tty.c_cc[VMIN] = 1;
- tty.c_cc[VTIME] = 0;
- tcflush(fd, TCIOFLUSH);
- if (tcsetattr(fd, TCSANOW, &tty) != 0) {
- printf("Error from tcsetattr: %s\n", strerror(errno));
- return -1;
- }
- return fd;
At the moment I don't know what I'm missing... Hope you got any ideas...;)
Best regards,
Jochen Tillner
