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| 17 | * Free Software Foundation, Inc., * |
17 | * Free Software Foundation, Inc., * |
| 18 | * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. * |
18 | * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. * |
| 19 | ****************************************************************************/ |
19 | ****************************************************************************/ |
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| 20 | 20 | ||
| 21 | #include <avr/io.h> |
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| 22 | 21 | #include <avr/io.h> |
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| 23 | #include <util/delay.h> |
22 | #include <util/delay.h> |
| 24 | #include <avr/pgmspace.h> |
23 | #include <avr/pgmspace.h> |
| 25 | #include <string.h> |
24 | #include <string.h> |
| 26 | #include <stdlib.h> |
25 | #include <stdlib.h> |
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| 64 | 63 | ||
| 65 | // end sending |
64 | // end sending |
| 66 | MAX_CS_HIGH |
65 | MAX_CS_HIGH |
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| 67 | } |
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| 68 | 66 | } |
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| 69 | 67 | ||
| 70 | /** |
68 | /** |
| 71 | * write a <character> to <address> of MAX7456 display memory |
69 | * write a <character> to <address> of MAX7456 display memory |
| 72 | */ |
70 | */ |
| 73 | void write_char(uint16_t address, char character) { |
71 | void write_char(uint16_t address, char character) { |
| 74 | spi_send_byte(0x05, (address & 0xFF00) >> 8); // DMAH |
72 | spi_send_byte(0x05, (address & 0xFF00) >> 8); // DMAH |
| 75 | spi_send_byte(0x06, (address & 0x00FF)); // DMAL |
73 | spi_send_byte(0x06, (address & 0x00FF)); // DMAL |
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| 76 | spi_send_byte(0x07, character); // DMDI |
- | |
| 77 | } |
74 | spi_send_byte(0x07, character); // DMDI |
| 78 | 75 | } |
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| 79 | 76 | ||
| 80 | /** |
77 | /** |
| 81 | * clear display memory |
78 | * clear display memory |
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| 93 | _delay_us(20); |
90 | _delay_us(20); |
| 94 | } |
91 | } |
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| 95 | 92 | ||
| - | 93 | ||
| 96 | 94 | #if (ALLCHARSDEBUG|(WRITECHARS != -1)) |
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| 97 | #if (ALLCHARSDEBUG|(WRITECHARS != -1)) |
95 | |
| 98 | /** |
96 | /** |
| 99 | * for testing write all chars to screen |
97 | * for testing write all chars to screen |
| 100 | */ |
98 | */ |