From f146a3c0cd4ef1bf7ffefea11d944a0ba0b9f385 Mon Sep 17 00:00:00 2001
From: Angus Gratton <gus@projectgus.com>
Date: Fri, 20 Nov 2015 17:30:02 +1100
Subject: [PATCH] Add in-progress RTC register header (some registers still
undocumented)
Author for this work is @foogod, extracted from 1da996e (open-libmain branch).
Progress towards #8.
---
core/include/esp/rtc_regs.h | 56 +++++++++++++++++++++++++++++++++++++
1 file changed, 56 insertions(+)
create mode 100644 core/include/esp/rtc_regs.h
diff --git a/core/include/esp/rtc_regs.h b/core/include/esp/rtc_regs.h
new file mode 100644
index 0000000..ff79e9d
--- /dev/null
+++ b/core/include/esp/rtc_regs.h
@@ -0,0 +1,56 @@
+/* esp/rtc_regs.h
+ *
+ * ESP8266 RTC register definitions
+ *
+ * Not compatible with ESP SDK register access code.
+ */
+
+#ifndef _ESP_RTC_REGS_H
+#define _ESP_RTC_REGS_H
+
+#include "esp/types.h"
+#include "common_macros.h"
+
+#define RTC_BASE 0x60000700
+#define RTC (*(struct RTC_REGS *)(RTC_BASE))
+
+//FIXME: need to understand/clarify distinction between GPIO_CONF and GPIO_CFG[]
+// Note: GPIO_CFG[3] is also known as PAD_XPD_DCDC_CONF in eagle_soc.h
+
+struct RTC_REGS {
+ uint32_t volatile _unknown0; // 0x00
+ uint32_t volatile COUNTER_ALARM; // 0x04
+ uint32_t volatile RESET_REASON0; // 0x08 //FIXME: need better name
+ uint32_t volatile _unknownc[2]; // 0x0c - 0x10
+ uint32_t volatile RESET_REASON1; // 0x14 //FIXME: need better name
+ uint32_t volatile RESET_REASON2; // 0x18 //FIXME: need better name
+ uint32_t volatile COUNTER; // 0x1c
+ uint32_t volatile INT_SET; // 0x20
+ uint32_t volatile INT_CLEAR; // 0x24
+ uint32_t volatile INT_ENABLE; // 0x28
+ uint32_t volatile _unknown2c; // 0x2c
+ uint32_t volatile SCRATCH[4]; // 0x30 - 3c
+ uint32_t volatile _unknown40[10]; // 0x40 - 0x64
+ uint32_t volatile GPIO_OUT; // 0x68
+ uint32_t volatile _unknown6c[2]; // 0x6c - 0x70
+ uint32_t volatile GPIO_ENABLE; // 0x74
+ uint32_t volatile _unknown80[5]; // 0x78 - 0x88
+ uint32_t volatile GPIO_IN; // 0x8c
+ uint32_t volatile GPIO_CONF; // 0x90
+ uint32_t volatile GPIO_CFG[6]; // 0x94 - 0xa8
+};
+
+_Static_assert(sizeof(struct RTC_REGS) == 0xac, "RTC_REGS is the wrong size");
+
+/* The following are used in sdk_rtc_get_reset_reason(). Details are still a
+ * bit sketchy regarding exactly what they mean/do.. */
+
+#define RTC_RESET_REASON1_CODE_M 0x0000000f
+#define RTC_RESET_REASON1_CODE_S 0
+
+#define RTC_RESET_REASON2_CODE_M 0x0000003f
+#define RTC_RESET_REASON2_CODE_S 8
+
+#define RTC_RESET_REASON0_SOMETHING BIT(21)
+
+#endif /* _ESP_RTC_REGS_H */