upm_result_t rn2903_set_flow_control(const rn2903_context dev,
RN2903_FLOW_CONTROL_T fc)
{
assert(dev != NULL);
mraa_result_t rv = MRAA_SUCCESS;
switch(fc)
{
case RN2903_FLOW_CONTROL_NONE:
rv = mraa_uart_set_flowcontrol(dev->uart, false, false);
break;
case RN2903_FLOW_CONTROL_HARD:
rv = mraa_uart_set_flowcontrol(dev->uart, false, true);
break;
default:
return UPM_ERROR_INVALID_PARAMETER;
}
if (rv == MRAA_SUCCESS)
return UPM_SUCCESS;
else
return UPM_ERROR_OPERATION_FAILED;
}
// uart init
ecezo_context ecezo_uart_init(unsigned int uart, unsigned int baudrate)
{
// make sure MRAA is initialized
int mraa_rv;
if ((mraa_rv = mraa_init()) != MRAA_SUCCESS)
{
printf("%s: mraa_init() failed (%d).\n", __FUNCTION__, mraa_rv);
return NULL;
}
ecezo_context dev =
(ecezo_context)malloc(sizeof(struct _ecezo_context));
if (!dev)
return NULL;
// zero out context
memset((void *)dev, 0, sizeof(struct _ecezo_context));
// initialize the MRAA contexts
// uart, default should be 8N1
if (!(dev->uart = mraa_uart_init(uart)))
{
printf("%s: mraa_uart_init() failed.\n", __FUNCTION__);
ecezo_close(dev);
return NULL;
}
if (mraa_uart_set_baudrate(dev->uart, baudrate))
{
printf("%s: mraa_uart_set_baudrate() failed.\n", __FUNCTION__);
ecezo_close(dev);
return NULL;
}
mraa_uart_set_flowcontrol(dev->uart, false, false);
if (generic_init(dev))
{
printf("%s: generic_init() failed.\n", __FUNCTION__);
ecezo_close(dev);
return NULL;
}
return dev;
}
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
//////////////////////////////////////// Modem related functions //////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
int init_modem(){
mraa_init();
if( (uart = mraa_uart_init(0)) == NULL ){
writeToFile(src, "error INITIATING UART\n");
exit(UART_ERROR);
}
/*set uart boud rate [bps]*/
if ( mraa_uart_set_baudrate(uart, UART_BOUD_RATE)!=MRAA_SUCCESS) {
writeToFile(src, "error seting baudrate\n");
exit(UART_ERROR);
}
if ( mraa_uart_set_mode(uart, 8,MRAA_UART_PARITY_NONE , 1)!=MRAA_SUCCESS) {
writeToFile(src, "error seting mode\n");
}
mraa_uart_set_flowcontrol(uart, 0, 0);
writeToFile(src, "init modem\n");
}
/**
* Set the flowcontrol
*
* @param xonxoff XON/XOFF Software flow control.
* @param rtscts RTS/CTS out of band hardware flow control
* @return Result of operation
*/
Result
setFlowcontrol(bool xonxoff, bool rtscts)
{
return (Result) mraa_uart_set_flowcontrol(m_uart, xonxoff, rtscts);
}