Bus Pirate 1 Mbaud uart.

[firewalker]

 Today I had to test a serial connection of 1 Mbaud. The only available 1 Mbaud capable USB<->serial adapter I had was the TF323R on a Bus Pirate.

It's fairly easy to set it up like a transparent bridge on 1 Mbaud, but it seems the speed between TF232R an the PIC 24F is at a fixed 115,2 kbaud?


PC USB <---115,2 kbaud---> PIC 24F <---1 Mbaud---> Serial Device

Is that correct? I can't use a true 1 Mbaud bridge?

Alexander.

[firewalker]

For everyone interested, i can be done by making source code changes.

uart.c:55

From:

Code: [Select]

const uint16_t UART_BRG_SPEED[] = {
    13332, /* 300 bps */
    3332,  /* 1200 bps */
    1666,  /* 2400 bps */
    832,   /* 4800 bps */
    416,   /* 9600 bps */
    207,   /* 19200 bps */
    103,   /* 38400 bps */
    68,    /* 57600 bps */
    34,    /* 115200 bps */
    127,   /* 31250 bps */
};

To:

Code: [Select]

const uint16_t UART_BRG_SPEED[] = {
    13332, /* 300 bps */
    3332,  /* 1200 bps */
    1666,  /* 2400 bps */
    832,   /* 4800 bps */
    416,   /* 9600 bps */
    207,   /* 19200 bps */
    103,   /* 38400 bps */
    68,    /* 57600 bps */
    34,    /* 115200 bps */
    127,   /* 31250 bps */
    3      /* 1000000 bps*/
};


main.c:171

From:

Code: [Select]

  /* Set the UART port speed to 115200 bps. */
  bus_pirate_configuration.terminal_speed = 8;

To:

Code: [Select]

  /* Set the UART port speed to 1000000 bps. */
  bus_pirate_configuration.terminal_speed = 10;


[ricktendo]

Sorta Off Topic: but can Bus Blaster also be used as UART?

[firewalker]

I don't know.

Alexander.