From 9136ea9015c68fba7302dbe33a759aea43860b2f Mon Sep 17 00:00:00 2001
From: Marti Bolivar <mbolivar@leaflabs.com>
Date: Sun, 27 Feb 2011 05:39:55 -0500
Subject: Refactor backup (BKP) and power (PWR) routines.

---
 libmaple/bkp.h | 98 ++++++++++++++++++++++++++++++++++++++--------------------
 1 file changed, 65 insertions(+), 33 deletions(-)

(limited to 'libmaple/bkp.h')

diff --git a/libmaple/bkp.h b/libmaple/bkp.h
index 9ad4c41..ce8e6c7 100644
--- a/libmaple/bkp.h
+++ b/libmaple/bkp.h
@@ -32,51 +32,83 @@
 #ifndef _BKP_H_
 #define _BKP_H_
 
+#include "libmaple.h"
+
 #ifdef __cplusplus
 extern "C" {
 #endif
 
-#define BKP_BASE        0x40006C00
-#define BKP_RTCCR       (BKP_BASE + 0x2C)
-#define BKP_CR          (BKP_BASE + 0x30)
-#define BKP_CSR         (BKP_BASE + 0x34)
-
-/**
- * Initialize backup interface. This function enables the power and
- * backup interface clocks.  It does not enable write access to the
- * backup registers.
- */
-void bkp_init(void);
+typedef struct bkp_reg_map {
+    const uint32 RESERVED1;
+    __io uint32 DR1;            ///< Data register 1
+    __io uint32 DR2;            ///< Data register 2
+    __io uint32 DR3;            ///< Data register 3
+    __io uint32 DR4;            ///< Data register 4
+    __io uint32 DR5;            ///< Data register 5
+    __io uint32 DR6;            ///< Data register 6
+    __io uint32 DR7;            ///< Data register 7
+    __io uint32 DR8;            ///< Data register 8
+    __io uint32 DR9;            ///< Data register 9
+    __io uint32 DR10;           ///< Data register 10
+    __io uint32 RTCCR;          ///< RTC control register
+    __io uint32 CR;             ///< Control register
+    __io uint32 CSR;            ///< Control and status register
+#if NR_BKP_REGS > 10
+    const uint32 RESERVED2;
+    const uint32 RESERVED3;
+    __io uint32 DR11;           ///< Data register 11
+    __io uint32 DR12;           ///< Data register 12
+    __io uint32 DR13;           ///< Data register 13
+    __io uint32 DR14;           ///< Data register 14
+    __io uint32 DR15;           ///< Data register 15
+    __io uint32 DR16;           ///< Data register 16
+    __io uint32 DR17;           ///< Data register 17
+    __io uint32 DR18;           ///< Data register 18
+    __io uint32 DR19;           ///< Data register 19
+    __io uint32 DR20;           ///< Data register 20
+    __io uint32 DR21;           ///< Data register 21
+    __io uint32 DR22;           ///< Data register 22
+    __io uint32 DR23;           ///< Data register 23
+    __io uint32 DR24;           ///< Data register 24
+    __io uint32 DR25;           ///< Data register 25
+    __io uint32 DR26;           ///< Data register 26
+    __io uint32 DR27;           ///< Data register 27
+    __io uint32 DR28;           ///< Data register 28
+    __io uint32 DR29;           ///< Data register 29
+    __io uint32 DR30;           ///< Data register 30
+    __io uint32 DR31;           ///< Data register 31
+    __io uint32 DR32;           ///< Data register 32
+    __io uint32 DR33;           ///< Data register 33
+    __io uint32 DR34;           ///< Data register 34
+    __io uint32 DR35;           ///< Data register 35
+    __io uint32 DR36;           ///< Data register 36
+    __io uint32 DR37;           ///< Data register 37
+    __io uint32 DR38;           ///< Data register 38
+    __io uint32 DR39;           ///< Data register 39
+    __io uint32 DR40;           ///< Data register 40
+    __io uint32 DR41;           ///< Data register 41
+    __io uint32 DR42;           ///< Data register 42
+#endif
+} bkp_reg_map;
 
-/** Disable power and backup interface clocks. */
-void bkp_disable(void);
+typedef struct bkp_dev {
+    bkp_reg_map *regs;
+} bkp_dev;
 
 /**
- * Enable write access to the backup registers.  Backup interface must
- * be initialized for subsequent register writes to work.
- * @see bkp_init()
+ * Backup device.
  */
-void bkp_enable_writes(void);
+extern const bkp_dev *BKP;
 
-/**
- * Disable write access to the backup registers.  Does not disable
- * backup interface clocks.
+/*
+ * Backup peripheral base.
  */
-void bkp_disable_writes(void);
+#define BKP_BASE        ((bkp_reg_map*)0x40006C00)
 
-/**
- * Read a value from given backup data register.
- * @param reg Data register to read, from 1 to NR_BKP_REGS (10 on Maple).
- */
+void bkp_init(void);
+void bkp_enable_writes(void);
+void bkp_disable_writes(void);
 uint16 bkp_read(uint8 reg);
-
-/**
- * Write a value to given data register.  Backup interface must have
- * been previously initialized, and write access to backup registers
- * must be enabled.
- * @param reg Data register to write, from 1 to NR_BKP_REGS (10 on Maple).
- * @param val Value to write into the register.
- */
 void bkp_write(uint8 reg, uint16 val);
 
 #ifdef __cplusplus
-- 
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