Interrupt 5275EVB

bizio — Mon, 19 Jun 2006 15:15:24 GMT

Hi all,
I'm working with 5275EVB.I have a problem with the management of the interrupts generated by the UARTs. The source code used to inizialize the UARTs is the following:

MCF_UART_UCR1 = MCF_UART_UCR_RESET_TX;
MCF_UART_UCR2 = MCF_UART_UCR_RESET_TX;

MCF_UART_UCR1 = MCF_UART_UCR_RESET_RX;
MCF_UART_UCR2 = MCF_UART_UCR_RESET_RX;

MCF_UART_UCR1 = MCF_UART_UCR_RESET_MR;
MCF_UART_UCR2 = MCF_UART_UCR_RESET_MR;

MCF_UART_UMR1 = (0
| MCF_UART_UMR_PM_NONE
| MCF_UART_UMR_RXIRQ
| MCF_UART_UMR_BC_8 );
MCF_UART_UMR2 = (0
| MCF_UART_UMR_PM_NONE
| MCF_UART_UMR_RXIRQ
| MCF_UART_UMR_BC_8);

MCF_UART_UMR1 = (0
| MCF_UART_UMR_CM_NORMAL
| MCF_UART_UMR_SB_STOP_BITS_1);
MCF_UART_UMR2 = (0
| MCF_UART_UMR_CM_NORMAL
| MCF_UART_UMR_SB_STOP_BITS_1);

MCF_UART_UCSR1 = (0
| MCF_UART_UCSR_RCS_SYS_CLK
| MCF_UART_UCSR_TCS_SYS_CLK);
MCF_UART_UCSR2 = (0
| MCF_UART_UCSR_RCS_SYS_CLK
| MCF_UART_UCSR_TCS_SYS_CLK);

MCF_UART_UIMR1 = MCF_UART_UIMR_RXRDY_FU;

MCF_UART_UISR1 = MCF_UART_UISR_RXRDY_FU;

MCF_UART_UIMR2 = MCF_UART_UISR_RXRDY_FU;

MCF_UART_UISR2 = MCF_UART_UISR_RXRDY_FU;

ubgs = (uint16)((SYSTEM_CLOCK*1000000)/(9600 * 32));

MCF_UART_UBG1(1) = (uint8)((ubgs & 0xFF00) >> 8);
MCF_UART_UBG2(1) = (uint8)(ubgs & 0x00FF);

ubgs = (uint16)((SYSTEM_CLOCK*1000000)/(4800 * 32));

MCF_UART_UBG1(2) = (uint8)((ubgs & 0xFF00) >> 8);
MCF_UART_UBG2(2) = (uint8)(ubgs & 0x00FF);

MCF_UART_UCR1 = (0
| MCF_UART_UCR_TX_ENABLED
| MCF_UART_UCR_RX_ENABLED);
MCF_UART_UCR2 = (0
| MCF_UART_UCR_TX_ENABLED
| MCF_UART_UCR_RX_ENABLED);

At the beginning it runs correctly, but after some interrupts received the CodeWarrior goes on error.
The error is "Address Error".
Someone can help me to resolve this error?
Thank you in advance for your help.

Message Edited by bizio on 2006-06-19 03:17 AM

Re: Interrupt 5275EVB

fire — Tue, 20 Jun 2006 09:46:53 GMT

hai,

I faced the same problem and i strugled for days.

The problem is with nesting of interrupts.If u are disabling the global interrupt any where, do it in the correct way.

let me know whether you are disabling the interrupts any where.Give me the correct details.

ALL THE BEST.

Re: Interrupt 5275EVB

mvincent — Wed, 21 Jun 2006 20:05:54 GMT

Something to check: make sure you have programmed the interrupt controller's ICRs with unique interrupt level/priority. Also, make sure all the code and structures involved in the service routines are reentrant or in critical sections.

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Interrupt 5275EVB

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