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| Rev 402 | Rev 403 | ||
|---|---|---|---|
| Line 91... | Line 91... | ||
| 91 | uint16_t address = y * 30 + x; |
91 | uint16_t address = y * 30 + x; |
| 92 | write_char_att(address, attribute); |
92 | write_char_att(address, attribute); |
| 93 | } |
93 | } |
| Line 94... | Line 94... | ||
| 94 | 94 | ||
| 95 | /** |
95 | /** |
| 96 | * clear display memory |
96 | * clear display by writing blank characters all over it |
| 97 | */ |
97 | */ |
| 98 | void clear(void) { |
98 | void clear(void) { |
| 99 | /*uint16_t memory_address = 0; |
99 | uint16_t memory_address = 0; |
| 100 | for (unsigned int a = 0; a < 480; a++) { |
100 | for (unsigned int a = 0; a < 480; a++) { |
| 101 | write_char(memory_address++, 0); |
101 | write_char(memory_address++, 0); |
| 102 | }*/ |
- | |
| 103 | // clear all display-mem (DMM) |
- | |
| 104 | spi_send_byte(0x04, 0b00000100); |
- | |
| 105 | - | ||
| 106 | // clearing takes 12uS according to maxim so lets wait longer |
- | |
| 107 | _delay_us(20); |
102 | } |
| Line 108... | Line 103... | ||
| 108 | } |
103 | } |
| 109 | 104 | ||
| 110 | /** |
105 | /** |