1 files changed, 66 insertions, 0 deletions
diff --git a/fw/mcp9801.h b/fw/mcp9801.h
new file mode 100644
index 0000000..6060c98
--- /dev/null
+++ b/fw/mcp9801.h
@@ -0,0 +1,66 @@
+/* 8seg LED display driver firmware
+ * Copyright (C) 2018 Sebastian Götte <code@jaseg.net>
+ * 
+ * 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 3 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, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef __MCP9801_H__
+#define __MCP9801_H__
+
+#define MCP9801_I2C_ADDR 0x90
+#define MCP9801_I2C_PERIPH I2C1
+
+#include <stdint.h>
+
+enum mcp9801_regmap {
+    MCP9801_REG_TEMP    = 0,
+    MCP9801_REG_CONFIG  = 1,
+    MCP9801_REG_HYST    = 2,
+    MCP9801_REG_LIMIT   = 3
+};
+
+enum mcp9801_config {
+    MCP9801_ONESHOT_ON  = 1<<7,
+    MCP9801_ONESHOT_OFF = 0<<7,
+    MCP9801_ONESHOT_Msk = 1<<7,
+
+    MCP9801_RES_9BIT  = 0<<5,
+    MCP9801_RES_10BIT = 1<<5,
+    MCP9801_RES_11BIT = 2<<5,
+    MCP9801_RES_12BIT = 3<<5,
+    MCP9801_RES_Msk   = 3<<5,
+
+    MCP9801_FAULT_QUEUE_1   = 0<<3,
+    MCP9801_FAULT_QUEUE_2   = 1<<3,
+    MCP9801_FAULT_QUEUE_4   = 2<<3,
+    MCP9801_FAULT_QUEUE_6   = 3<<3,
+    MCP9801_FAULT_QUEUE_Msk = 3<<3,
+
+    MCP9801_ALERT_HIGH = 1<<2,
+    MCP9801_ALERT_LOW  = 0<<2,
+    MCP9801_ALERT_Msk  = 1<<2,
+
+    MCP9801_MODE_INT  = 1<<1,
+    MCP9801_MODE_COMP = 0<<1,
+    MCP9801_MODE_Msk  = 1<<1,
+
+    MCP9801_SHUTDOWN_ON  = 1<<0,
+    MCP9801_SHUTDOWN_OFF = 0<<0,
+    MCP9801_SHUTDOWN_Msk = 1<<0,
+};
+
+void mcp9801_init(void);
+int32_t mcp9801_read_mdegC(void);
+
+#endif /* __MCP9801_H__ */