| /C-OSD/trunk/main.c |
|---|
| 353,16 → 353,10 |
| spi_send_byte(0x00, 0b01001000); |
| } |
| // clear all display-mem (DMM) |
| spi_send_byte(0x04, 0b00000100); |
| // clearing takes 12uS according to maxim so lets wait longer |
| _delay_us(120); |
| // 8bit mode |
| spi_send_byte(0x04, 0b01000000); |
| // write blank chars to whole screen |
| // clear display |
| clear(); |
| #if !(ALLCHARSDEBUG|(WRITECHARS != -1)) |
| /C-OSD/trunk/max7456_software_spi.c |
|---|
| 93,14 → 93,19 |
| } |
| /** |
| * clear display by writing blank characters all over it |
| * clear display memory |
| */ |
| void clear(void) { |
| uint16_t memory_address = 0; |
| /*uint16_t memory_address = 0; |
| for (unsigned int a = 0; a < 480; a++) { |
| write_char(memory_address++, 0); |
| }*/ |
| // clear all display-mem (DMM) |
| spi_send_byte(0x04, 0b00000100); |
| // clearing takes 12uS according to maxim so lets wait longer |
| _delay_us(20); |
| } |
| } |
| /** |
| * write an ascii <character> to <address> of MAX7456 display memory |