Hello.
I seek to use the macros like IORD_ALTERA_AVALON_UART_STATUS(base).
My code is :
void uart1_init(void)
{
int data_uart ;
...
alt_irq_register(UART1_IRQ, NULL, isr_uart1) ;
// read status register from UART1
data_uart = IORD_ALTERA_AVALON_UART_STATUS(UART1_BASE) ;
...
}
The file systems.h is for UART1 :
/*
* uart1 configuration
*
*/
# define UART1_NAME "/dev/uart1"# define UART1_TYPE "altera_avalon_uart"# define UART1_BASE 0x0011D0A0 <--- base of registers# define UART1_IRQ 4# define UART1_BAUD 19200# define UART1_DATA_BITS 8# define UART1_FIXED_BAUD 1# define UART1_PARITY 'N'# define UART1_STOP_BITS 1# define UART1_USE_CTS_RTS 0# define UART1_USE_EOP_REGISTER 0# define UART1_SIM_TRUE_BAUD 0# define UART1_SIM_CHAR_STREAM ""# define UART1_FREQ 50000000
In assembler, I find :
0x0000686c <uart1_init+80>: call 0x11320 <alt_irq_register>
0x00006870 <uart1_init+84>: movhi r2,18
0x00006874 <uart1_init+88>: addi r2,r2,-12120
0x00006878 <uart1_init+92>: ldwio r2,0(r2) <-- here r2 = 0x0011D0A8
Is this an error of compilation ?
Is this an error of my share in the accesses to the registers of the UART?
Thank you for your assistance.
