36 lines
1.4 KiB
C
36 lines
1.4 KiB
C
/*
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* ht1632.h
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* defintions for Holtek ht1632 LED driver.
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*/
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#if !defined(DEBUGPRINT)
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#define DEBUGPRINT(fmt, args...)
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#endif
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/*
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* commands written to the chip consist of a 3 bit "ID", followed by
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* either 9 bits of "Command code" or 7 bits of address + 4 bits of data.
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*/
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#define HT1632_ID_CMD 4 /* ID = 100 - Commands */
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#define HT1632_ID_RD 6 /* ID = 110 - Read RAM */
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#define HT1632_ID_WR 5 /* ID = 101 - Write RAM */
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#define HT1632_CMD_SYSDIS 0x00 /* CMD= 0000-0000-x Turn off oscil */
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#define HT1632_CMD_SYSON 0x01 /* CMD= 0000-0001-x Enable system oscil */
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#define HT1632_CMD_LEDOFF 0x02 /* CMD= 0000-0010-x LED duty cycle gen off */
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#define HT1632_CMD_LEDON 0x03 /* CMD= 0000-0011-x LEDs ON */
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#define HT1632_CMD_BLOFF 0x08 /* CMD= 0000-1000-x Blink ON */
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#define HT1632_CMD_BLON 0x09 /* CMD= 0000-1001-x Blink Off */
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#define HT1632_CMD_SLVMD 0x10 /* CMD= 0001-00xx-x Slave Mode */
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#define HT1632_CMD_MSTMD 0x14 /* CMD= 0001-01xx-x Master Mode */
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#define HT1632_CMD_RCCLK 0x18 /* CMD= 0001-10xx-x Use on-chip clock */
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#define HT1632_CMD_EXTCLK 0x1C /* CMD= 0001-11xx-x Use external clock */
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#define HT1632_CMD_COMS00 0x20 /* CMD= 0010-ABxx-x commons options */
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#define HT1632_CMD_COMS01 0x24 /* CMD= 0010-ABxx-x commons options */
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#define HT1632_CMD_COMS10 0x28 /* CMD= 0010-ABxx-x commons options */
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#define HT1632_CMD_COMS11 0x2C /* CMD= 0010-ABxx-x commons options */
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#define HT1632_CMD_PWM 0xA0 /* CMD= 101x-PPPP-x PWM duty cycle */
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