Hello. I've been programming the MCF5282 eval board these days. Now I can't get the Uart Interrupt work, edge port and timer interrupt are working by now. Is there a special way to configure the uart? Dunno what am i doing wrong. Uart code is attached below.
Thanks for your help.
// Code:
void _SCI5_uart2_init(uint32 baudRate)
{ //Initialize internal No.1 UART
register uint16 ubgs;
//Disable receiver and transmitter
MCF5282_UART1_UCR = (MCF5282_UART_UCR_TX_DISABLED |
MCF5282_UART_UCR_RX_DISABLED);
MCF5282_GPIO_PUAPAR = 0x0F; //Set Port UA to initialize URXD0/URXD1 UTXD0/UTXD1
MCF5282_UART1_UCR = MCF5282_UART_UCR_RESET_TX; //Reset Transmitter
MCF5282_UART1_UCR = MCF5282_UART_UCR_RESET_RX; //Reset Receiver
MCF5282_UART1_UCR = MCF5282_UART_UCR_RESET_MR; //Reset Mode Register
//No parity, 8-bits per character
MCF5282_UART1_UMR = (MCF5282_UART_UMR1_PM_NONE |
MCF5282_UART_UMR1_BC_8 );
//No echo or loopback, 1 stop bit
MCF5282_UART1_UMR = (MCF5282_UART_UMR2_CM_NORMAL |
MCF5282_UART_UMR2_STOP_BITS_1);
//Set Rx and Tx baud by timer
MCF5282_UART1_UCSR = (MCF5282_UART_UCSR_RCS_SYS_CLK |
MCF5282_UART_UCSR_TCS_SYS_CLK);
MCF5282_UART1_UIMR = 0; //disable irq
//Calculate baud settings
ubgs = (uint16)((SYSTEM_CLOCK*1000000)/(baudRate * 32));
MCF5282_UART1_UBG1 = (uint8)((ubgs & 0xFF00) >> 8);
MCF5282_UART1_UBG2 = (uint8)(ubgs & 0x00FF);
//Enable receiver and transmitter
MCF5282_UART1_UCR = (MCF5282_UART_UCR_TX_ENABLED |
MCF5282_UART_UCR_RX_ENABLED);
//enable Rx irq
MCF5282_UART1_UIMR = (MCF5282_UART_UIMR_FFULL);
MCF5282_UART1_UISR = (MCF5282_UART_UISR_RXRDY);
MCF5282_INTC0_ICR14 = (uint8)(MCF5282_INTC_ICR_IL(2) | MCF5282_INTC_ICR_IP(1));
MCF5282_INTC0_IMRL &= ~(MCF5282_INTC_IMRL_INT14);
}
