altos: Add AS1107 LED display driver

[fw/altos] / src / drivers / ao_as1107.h

diff --git a/src/drivers/ao_as1107.h b/src/drivers/ao_as1107.h
new file mode 100644 (file)
index 0000000..a22b17d
--- /dev/null
+++ b/src/drivers/ao_as1107.h
@@ -0,0 +1,59 @@
+/*
+ * Copyright © 2017 Keith Packard <keithp@keithp.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ */
+
+#ifndef _AO_AS1107_H_
+#define _AO_AS1107_H_
+
+#define AO_AS1107_NO_OP                0x00
+#define AO_AS1107_DIGIT(n)     (0x01 + (n))
+#define AO_AS1107_DECODE_MODE  0x09
+#define AO_AS1107_INTENSITY    0x0a
+#define AO_AS1107_SCAN_LIMIT   0x0b
+#define AO_AS1107_SHUTDOWN     0x0c
+#define  AO_AS1107_SHUTDOWN_SHUTDOWN_RESET     0x00
+#define  AO_AS1107_SHUTDOWN_SHUTDOWN_NOP       0x80
+#define  AO_AS1107_SHUTDOWN_NORMAL_RESET       0x01
+#define  AO_AS1107_SHUTDOWN_NORMAL_NOP         0x81
+
+#define AO_AS1107_FEATURE      0x0e
+#define  AO_AS1107_FEATURE_CLK_EN      0       /* external clock enable */
+#define  AO_AS1107_FEATURE_REG_RES     1
+#define  AO_AS1107_FEATURE_DECODE_SEL  2       /* select HEX decode */
+#define  AO_AS1107_FEATURE_SPI_EN      3
+#define  AO_AS1107_FEATURE_BLINK_EN    4
+#define  AO_AS1107_FEATURE_BLINK_FREQ  5
+#define  AO_AS1107_FEATURE_SYNC                6
+#define  AO_AS1107_FEATURE_BLINK_START 7
+#define AO_AS1107_DISPLAY_TEST 0x0f
+
+void ao_as1107_init(void);
+
+void
+ao_as1107_write(uint8_t start, uint8_t count, uint8_t *values);
+
+void
+ao_as1107_write_8(uint8_t start, uint8_t value);
+
+void
+ao_as1107_write_16(uint8_t start, uint16_t value);
+
+#ifndef AO_AS1107_DECODE
+#error "must define AO_AS1107_DECODE"
+#endif
+
+#ifndef AO_AS1107_NUM_DIGITS
+#error "must define AO_AS1107_NUM_DIGITS"
+#endif
+
+#endif /* _AO_AS1107_H_ */