altos: first draft of driver for ADS1256 ADC from TI

[fw/altos] / src / drivers / ao_ads1256.h

diff --git a/src/drivers/ao_ads1256.h b/src/drivers/ao_ads1256.h
new file mode 100644 (file)
index 0000000..4413925
--- /dev/null
+++ b/src/drivers/ao_ads1256.h
@@ -0,0 +1,57 @@
+/*
+ * Copyright © 2019 Bdale Garbee <bdale@gag.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_ADS1256_H_
+#define _AO_ADS1256_H_
+
+/* commands */
+#define AO_ADS1256_WAKEUP              0x00
+#define AO_ADS1256_RDATA               0x01
+#define AO_ADS1256_RDATAC              0x03
+#define AO_ADS1256_SDATAC              0x0f
+#define AO_ADS1256_RREG                        0x10
+#define AO_ADS1256_WREG                        0x50
+#define AO_ADS1256_SELFCAL             0xf0
+#define AO_ADS1256_SELFOCAL            0xf1
+#define AO_ADS1256_SELFGCAL            0xf2
+#define AO_ADS1256_SYSOCAL             0xf3
+#define AO_ADS1256_SYSGCAL             0xf4
+#define AO_ADS1256_SYNC                        0xfc
+#define AO_ADS1256_STANDBY             0xfd
+#define AO_ADS1256_RESET               0xfe
+#define AO_ADS1256_WAKEUP2             0xff
+
+/* register map */
+#define AO_ADS1256_STATUS      0x00
+#define AO_ADS1256_MUX         0x01
+#define AO_ADS1256_ADCON       0x02
+#define AO_ADS1256_DRATE       0x03
+#define AO_ADS1256_IO          0x04
+#define AO_ADS1256_OFC0                0x05
+#define AO_ADS1256_OFC1                0x06
+#define AO_ADS1256_OFC2                0x07
+#define AO_ADS1256_FSC0                0x08
+#define AO_ADS1256_FSC1                0x09
+#define AO_ADS1256_FSC2                0x0a
+
+struct ao_ads1256_sample {
+       int32_t ain[AO_ADS1256_CHANNELS];
+};
+
+extern struct ao_ads1256_sample        ao_ads1256_current;
+
+void
+ao_ads1256_init(void);
+
+#endif /* _AO_ADS1256_H_ */