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Supervisor.asm
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Supervisor.asm
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#include <defBF537.h>
#include "uartlib.h"
.extern start_observation;
.section L1_data;
.byte sHead[] = 13,10,'Welcome to Supervisor. Type 0 to start observation', 13, 10, 0;
.byte sInputNumOfObservations[] = 13, 10, 'Input number of observations: ', 13, 10, 0;
.byte sStartingObservation[] = 13,10,'Starting observation...', 13, 10, 0;
.byte sFinishObservation[] = 13,10,'Observation finished!', 13, 10, 0;
.align 4;
.var aEchoFifo[16];
.section L1_code;
/***********************************************
* Register used:
* p0 - don't modify during code. Pointer to PORTF_FER.
* etc tbd
************************************************/
.global _main;
//_START:
_main:
[--sp] = rets;
// set FERF registers
p0.l = lo(PORTF_FER);
p0.h = hi(PORTF_FER);
r0.l = 0x0003;
r1 = w[p0] (z);
#if (__SILICON_REVISION__ < 0x0001)
ssync;
w[p0] = r0;
ssync;
w[p0] = r0;
ssync;
#else
w[p0] = r0;
#endif
// Configure UART0 RX and UART0 TX pins
p0.l = lo(PORT_MUX);
p0.h = hi(PORT_MUX);
r0.l = 0x0000;
r1 = w[p0] (z);
ssync;
w[p0] = r0;
ssync;
w[p0] = r0;
ssync;
p0.l = lo(UART0_GCTL);
p0.h = hi(UART0_GCTL);
call uart_autobaud;
r0 >>= 7;
call uart_init;
p1.l = lo(IMASK);
p1.h = hi(IMASK);
r0.l = isr_uart_tx;
r0.h = isr_uart_tx;
[p1 + EVT10 - IMASK] = r0;
r0 = [p1 + IMASK - IMASK];
bitset(r0, bitpos(EVT_IVG10));
[p1 + IMASK - IMASK] = r0;
p1.l = lo(SIC_IMASK);
p1.h = hi(SIC_IMASK);
r0.l = 0x1000;
r0.h = 0x0000;
[p1] = r0;
[--sp] = reti;
r0 = w[p0+UART0_RBR-UART0_GCTL] (z);
r0 = w[p0+UART0_LSR-UART0_GCTL] (z);
r0 = w[p0+UART0_IIR-UART0_GCTL] (z);
r0 = ETBEI;
w[p0+UART0_IER-UART0_GCTL] = r0;
//call uart_wait4temt;
reti = [sp++];
p1.l = lo(IMASK);
p1.h = hi(IMASK);
i0.l = aEchoFifo;
i0.h = aEchoFifo;
i1 = i0;
b0 = i0;
b1 = i0;
l0 = length(aEchoFifo);
l1 = l0;
r0.l = isr_uart_error;
r0.h = isr_uart_error;
[p1 + EVT7 - IMASK] = r0;
r0.l = isr_uart_rx;
r0.h = isr_uart_rx;
[p1 + EVT8 - IMASK] = r0;
/*****************************************************************************
*
* Mask EVT10 interrupt and unmask EVT7 and EVT8.
*
****************************************************************************/
r0 = [p1 + IMASK - IMASK];
bitclr(r0, bitpos(EVT_IVG10));
bitset(r0, bitpos(EVT_IVG7));
bitset(r0, bitpos(EVT_IVG8));
[p1 + IMASK - IMASK] = r0;
/*****************************************************************************
*
* Enable and assign interrupts.
*
****************************************************************************/
p1.l = lo(SIC_IMASK);
p1.h = hi(SIC_IMASK);
r0.l = 0xF0FF;
r0.h = 0xFFFF;
[p1 + SIC_IAR0 - SIC_IMASK] = r0;
r0.l = 0x1FFF;
r0.h = 0xFFFF;
[p1 + SIC_IAR1 - SIC_IMASK] = r0;
r0.l = 0xFFFF;
r0.h = 0xFFFF;
[p1 + SIC_IAR2 - SIC_IMASK] = r0;
r0.l = 0xFFFF;
r0.h = 0xFFFF;
[p1 + SIC_IAR3 - SIC_IMASK] = r0;
r0.l = 0x0804;
r0.h = 0x0000;
[p1 + SIC_IMASK - SIC_IMASK] = r0;
[--sp] = reti;
r0 = w[p0+UART0_RBR-UART0_GCTL] (z);
r0 = w[p0+UART0_LSR-UART0_GCTL] (z);
r0 = w[p0+UART0_IIR-UART0_GCTL] (z);
r0 = ELSI | ERBFI;
w[p0+UART0_IER-UART0_GCTL] = r0;
r2 = -1;
supervisor_loop:
r1 = -1;
CC = r1 == r2;
if !CC jump supervisor_loop_0;
p1.l = sHead;
p1.h = sHead;
call uart_puts;
call uart_wait4temt;
r2 = 0;
jump supervisor_loop;
supervisor_loop_0:
r1 = 1;
CC = r1 == r2;
if !CC jump supervisor_loop_1;
p1.l = sInputNumOfObservations;
p1.h = sInputNumOfObservations;
call uart_puts;
call uart_wait4temt;
r2 = 2;
jump supervisor_loop;
supervisor_loop_1:
r1 = 3;
CC = r1 == r2;
if !CC jump supervisor_loop_2;
p1.l = sStartingObservation;
p1.h = sStartingObservation;
call uart_puts;
call uart_wait4temt;
call start_observation;
p1.l = sFinishObservation;
p1.h = sFinishObservation;
call uart_puts;
call uart_wait4temt;
r2 = -1;
supervisor_loop_2:
jump supervisor_loop;
_main.end: nop;
isr_uart_tx:
[--sp] = r0;
r0 = b[p3++] (z);
CC = r0 == 0;
if CC jump isr_tx_done;
w[p0+UART0_THR-UART0_GCTL] = r0;
nop;
nop;
ssync;
r0 = [sp++];
rti;
isr_tx_done:
r0 = w[p0+UART0_IIR-UART0_GCTL] (z);
ssync;
r0 = [sp++];
rti;
isr_uart_tx.end:
isr_uart_rx:
[--sp] = r0;
[--sp] = r1;
r0 = w[p0+UART0_RBR-UART0_GCTL] (z);
[i0++] = r0;
r1 = 0; // Initial state
CC = r2 == r1;
if !CC jump isr_uart_continue_1;
r1 = 0x30; // start observation
CC = r0 == r1;
if !CC jump isr_uart_end;
r2 = 1 (z); // Set start observation bit
jump isr_uart_end;
isr_uart_continue_1:
r1 = 2; // Read number of Observations
CC = r2 == r1;
if !CC jump isr_uart_end;
r2 = 3 (z);
r3 = r0;
jump isr_uart_end;
isr_uart_end:
nop;
ssync;
r1 = [sp++];
r0 = [sp++];
rti;
isr_uart_rx.end:
isr_uart_error:
[--sp] = r0;
r0 = w[p0+UART0_LSR-UART0_GCTL] (z);
r0 = 0xFF (z);
[i0++] = r0;
ssync;
r0 = [sp++];
rti;
isr_uart_error.end: