Reply by Anton Erasmus●September 29, 20072007-09-29
On Fri, 28 Sep 2007 22:14:15 -0500, Jack Klein <jackklein@spamcop.net>
wrote:
>On Fri, 28 Sep 2007 06:44:14 -0500, "bcincin" <berkecincin@gmail.com>
>wrote in comp.arch.embedded:
>
>>
>> Hi. I want to change reset uart and change baud rate with an interface
>> (combobox) on windows. At the beginning default baud rate is 2400.
>
>For what UART? What hardware is this program for?
>
>> ME2 |= UTXE1 + URXE1; // Enable USART1 TXD/RXD
>>
>> UCTL1 |= CHAR; // 8-bit character
>> UTCTL1 |= SSEL0; // UCLK = ACLK
>> UBR01 = 0x0D; // 32k/2400 - 13.65
>> UBR11 = 0x00;
>> UMCTL1 = 0x6B; // Modulation
>> UCTL1 &= ~SWRST; // Initialize USART state machine
>> IE2 |= URXIE1; // Enable USART1 RX interrupt
>>
>> ..
>>
>> how can i reset this later? I tried something like this but it doesn't
>> work
>>
>> ...
>> case 3: // set baud rate 9600
>> UCTL1 |= CHAR; // 8-bit character
>> UTCTL1 |= SSEL0; // UCLK = ACLK
>> UBR01=0x03;
>> UBR11=0x00;
>> UMCTL1=0x29;
>> UCTL1 &= ~SWRST;
>> IE2 |= URXIE1;
>> default;
>> ....
>
>Without knowing what part you are talking about, it's hard to do more
>than guess. But perhaps you should at least disable the interrupt
>while you are changing settings.
Also ... many UARTS have a soft-reset per channel. You can use this
bit to reset the specific channel, and then reconfigure.
Regards
Anton Erasmus
Reply by Jack Klein●September 29, 20072007-09-29
On Fri, 28 Sep 2007 06:44:14 -0500, "bcincin" <berkecincin@gmail.com>
wrote in comp.arch.embedded:
>
> Hi. I want to change reset uart and change baud rate with an interface
> (combobox) on windows. At the beginning default baud rate is 2400.
For what UART? What hardware is this program for?
> ME2 |= UTXE1 + URXE1; // Enable USART1 TXD/RXD
>
> UCTL1 |= CHAR; // 8-bit character
> UTCTL1 |= SSEL0; // UCLK = ACLK
> UBR01 = 0x0D; // 32k/2400 - 13.65
> UBR11 = 0x00;
> UMCTL1 = 0x6B; // Modulation
> UCTL1 &= ~SWRST; // Initialize USART state machine
> IE2 |= URXIE1; // Enable USART1 RX interrupt
>
> ..
>
> how can i reset this later? I tried something like this but it doesn't
> work
>
> ...
> case 3: // set baud rate 9600
> UCTL1 |= CHAR; // 8-bit character
> UTCTL1 |= SSEL0; // UCLK = ACLK
> UBR01=0x03;
> UBR11=0x00;
> UMCTL1=0x29;
> UCTL1 &= ~SWRST;
> IE2 |= URXIE1;
> default;
> ....
Hi. I want to change reset uart and change baud rate with an interface
(combobox) on windows. At the beginning default baud rate is 2400.
ME2 |= UTXE1 + URXE1; // Enable USART1 TXD/RXD
UCTL1 |= CHAR; // 8-bit character
UTCTL1 |= SSEL0; // UCLK = ACLK
UBR01 = 0x0D; // 32k/2400 - 13.65
UBR11 = 0x00;
UMCTL1 = 0x6B; // Modulation
UCTL1 &= ~SWRST; // Initialize USART state machine
IE2 |= URXIE1; // Enable USART1 RX interrupt
..
how can i reset this later? I tried something like this but it doesn't
work
...
case 3: // set baud rate 9600
UCTL1 |= CHAR; // 8-bit character
UTCTL1 |= SSEL0; // UCLK = ACLK
UBR01=0x03;
UBR11=0x00;
UMCTL1=0x29;
UCTL1 &= ~SWRST;
IE2 |= URXIE1;
default;
....
How can I do it?