Hi,
I am using OMAPL137 board & i am connecting the serial port of the board to the SIM 300 GSM modem. The communication between modem & the OMAPL137 board is proper when the serial port hardware flow controls are off but when i enable the hardware flow control CTS & RTS of the serial port, the communication between the eval board & modem hangs. In my OMAPL137 board linux kernel is running & i think kernel drivers are causing the issue because when i connect the modem to my linux PC & enable the hardware flow control then communication between modem & PC doesn't hangs.
I have compiled the kernel with the options given below
CONFIG_SERIAL_8250=y
#CONFIG_SERIAL_8250_CONSOLE=y
CONFIG_SERIAL_8250_NR_UARTS=3
CONFIG_SERIAL_8250_RUNTIME_UARTS=3
CONFIG_SERIAL_8250_PCI=y
CONFIG_SERIAL_8250_PNP=y
CONFIG_SERIAL_8250_CS=y
CONFIG_SERIAL_8250_EXTENDED=y
CONFIG_SERIAL_8250_MANY_PORTS=y
CONFIG_SERIAL_8250_FOURPORT=y
CONFIG_SERIAL_8250_ACCENT=y
CONFIG_SERIAL_8250_BOCA=y
CONFIG_SERIAL_8250_EXAR_ST16C554=y
CONFIG_SERIAL_8250_HUB6=y
CONFIG_SERIAL_8250_SHARE_IRQ=y
# CONFIG_SERIAL_8250_EXTENDED is not set
CONFIG_SERIAL_8250_RSA=y
CONFIG_SERIAL_8250_MCA=y
CONFIG_SERIAL_MAX3100=y
CONFIG_SERIAL_UARTLITE=y
CONFIG_SERIAL_CORE=y
#CONFIG_SERIAL_CORE_CONSOLE=y
CONFIG_SERIAL_JSM=y
CONFIG_SERIAL_TIMBERDALE=y
CONFIG_SERIAL_ALTERA_JTAGUART=y
CONFIG_SERIAL_ALTERA_UART=y
CONFIG_SERIAL_ALTERA_UART_MAXPORTS=3
CONFIG_SERIAL_ALTERA_UART_BAUDRATE=115200
Will the above kernel configuration provide me serial port hardware flow controls feature
Can any provide the solution for the above problem
Regards
