altos: Add bit-bang i2c driver

[fw/altos] / src / kernel / ao_i2c_bit.h

diff --git a/src/kernel/ao_i2c_bit.h b/src/kernel/ao_i2c_bit.h
new file mode 100644 (file)
index 0000000..bb9807f
--- /dev/null
+++ b/src/kernel/ao_i2c_bit.h
@@ -0,0 +1,43 @@
+/*
+ * Copyright © 2021 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.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ */
+
+#include <ao.h>
+
+void
+ao_i2c_bit_get(void);
+
+void
+ao_i2c_bit_put(void);
+
+bool
+ao_i2c_bit_start(uint8_t addr);
+
+bool
+ao_i2c_bit_restart(uint8_t addr);
+
+void
+ao_i2c_bit_stop(void);
+
+void
+ao_i2c_bit_send(void *block, uint16_t len);
+
+void
+ao_i2c_bit_recv(void *block, uint16_t len);
+
+void
+ao_i2c_bit_init(void);