void display_send_byte(char c);
void display_reset();
-void set_msg(char newmsg[10]) {
+void set_msg(char newmsg[11]) {
int i;
display_reset();
+ spi_enable();
for (i=0; i < 10; i++) {
+ if (newmsg[i] == 0) break;
+ }
+ for (i--; i >= 0; i--) {
display_send_byte(newmsg[i]&0x7f);
}
+ spi_disable();
}
void display_send_byte(char c) {
bset_misc_output(A3800_DISPLAY_WRITE); /* enable the display clock */
_io_ports[M6811_SPDR] = c; /* load SPI with byte */
- while(!(_io_ports[M6811_SPDR]&M6811_SPIE)); /* wait for completion */
- _io_ports[M6811_SPDR]; /* SPDR read to clear SPIE flag */
+ while(!(_io_ports[M6811_SPSR]&M6811_SPIF)); /* wait for completion */
+ _io_ports[M6811_SPDR]; /* SPDR read to clear SPIF flag */
bclr_misc_output(A3800_DISPLAY_WRITE); /* disable the display clock */
}
-#define DISPLAY_DELAY 100 /* ms to delay between ops - could be tweaked */
+#define DISPLAY_DELAY 50 /* ms to delay between ops - could be tweaked */
void display_reset() {
/* lower the reset line for a while */
bclr((void*)&_io_ports[M6811_PORTA], PORTA_DISP_RESET);
delay(DISPLAY_DELAY);
bset((void*)&_io_ports[M6811_PORTA], PORTA_DISP_RESET);
+ delay(DISPLAY_DELAY);
spi_enable();
- delay(DISPLAY_DELAY);
display_send_byte(0xC0 | 10); /* tell the controller there are 10 digits */
- display_send_byte(0xE0); /* set duty cycle to 100% */
+ //display_send_byte(0xE0); /* set duty cycle to 0% */
+ display_send_byte(0xFF); /* set duty cycle to 100% */
spi_disable();
}