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Hello,
I would like to access high speed baud rate (4M) for testing
here are my configuration
1.using wiced studio to download a 4m fw which wiced_transport_cfg_t is set as 4M
2.try to use cybluetool and sent reset command , assume this is work and in HCI mode
3.pull open all J26 connect with MCU using UART_TXD, UART_RXD, and UART_CTS is connect to 20706 eval board J19_8
4.sent a hci_reset command in MCU's Linux terminal
5.see nothing outcome
but those steps work fine when setting as baud 115200, what am I missong or anything wrong with high baud rate settings?
thank you for your comment.
Best regards,
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Hi ryli_4531716,
The maximum baud rate supported for HCI is 3M, therefore setting it to 4M will not work here.
Can you try setting it to 3M and test if it works.
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Hi SheetalJ_96,
yes, I noticed that.
and I found when start with 921600-3M ,and try to sent a dummy hci command first. it's not work as well
is anything shall notice with handling high speed?
there is my simple code:
-----------------------------------------------------------------------------------------------------
//set up
char hci_reset[] = {0x01, 0x03, 0x0C, 0x00};
char hci_dummy[] = {0x0a, 0x05};
//configure uart
printf("config start\n\r");
tcgetattr(fd, &options);
options.c_cflag &= ~PARENB;
options.c_cflag &= ~CSTOPB;
options.c_cflag &= ~CSIZE;
options.c_cflag |= CS8;
options.c_cc[VTIME] = 20; // read timeout 10*100ms
options.c_cc[VMIN] = 0;
options.c_lflag &= ~(ICANON | ECHO | ECHOE | ISIG);
options.c_oflag &= ~OPOST;
options.c_iflag &= ~(ICRNL | IXON);
cfsetispeed(&options, B921600);
cfsetospeed(&options, B921600);
options.c_cflag |= (CLOCAL | CREAD);
tcflush(fd, TCIFLUSH);
tcsetattr(fd, TCSANOW, &options);
printf("config complete\n\r");
//write in hci command
printf("write uart\n\r");
//send a fummy first
ret = write(fd, hci_dummy, sizeof(hci_dummy));
if (ret != sizeof( hci_dummy))
printf("ERROR write ret=%d\n", ret);
//sleep
sleep(1);
//send reset
printf("write uart\n\r");
ret = write(fd, hci_reset, sizeof(hci_reset));
if (ret != sizeof( hci_reset))
printf("ERROR write ret=%d\n", ret);
//read out
printf("read uart\n\r");
while ((ret = read(fd, rx_buf, 1)) > 0) {
rx_buf[1] = 0;
printf("0x%x\n", rx_buf[0]);
}
//}
//close
close(fd);
-----------------------------------------------------------------------------------------------------
thank you.