Diff: flc.c

Revision:

32:114e947a916b

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/flc.c	Tue Jul 18 16:39:46 2017 +0000
@@ -0,0 +1,125 @@
+/*******************************************************************************
+ * Copyright (C) 2014 Maxim Integrated Products, Inc., All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL MAXIM INTEGRATED BE LIABLE FOR ANY CLAIM, DAMAGES
+ * OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Except as contained in this notice, the name of Maxim Integrated 
+ * Products, Inc. shall not be used except as stated in the Maxim Integrated 
+ * Products, Inc. Branding Policy.
+ *
+ * The mere transfer of this software does not imply any licenses
+ * of trade secrets, proprietary technology, copyrights, patents,
+ * trademarks, maskwork rights, or any other form of intellectual
+ * property whatsoever. Maxim Integrated Products, Inc. retains all 
+ * ownership rights.
+ *******************************************************************************
+ */
+
+/* $Revision: 3277 $ $Date: 2014-10-02 13:39:01 -0500 (Thu, 02 Oct 2014) $ */
+
+#include "./mxc_config.h"
+
+#include <stdint.h>
+#include <string.h>
+
+#include "./flc.h"
+#include "./icc_regs.h"
+
+
+int32_t FLC_Erase(uint32_t address, uint8_t erase_code, uint8_t unlock_key)
+{
+    if(!MXC_ICC->ctrl_stat_f.enable) {
+        return -1;
+    }
+
+    mxc_flc_ctrl_t fcntl = MXC_FLC->ctrl_f;
+    fcntl.erase_code = 0; /* clear erase code */
+    fcntl.auto_incre_mode = 0; /* clear burst */
+    MXC_FLC->ctrl_f = fcntl;
+
+    fcntl.flsh_unlock = unlock_key;
+    fcntl.erase_code = erase_code;
+    MXC_FLC->ctrl_f = fcntl;
+
+    MXC_FLC->faddr = (address & MXC_FLC_PAGE_ERASE_MSK); /* set bank address */
+
+    fcntl = MXC_FLC->ctrl_f;
+    fcntl.page_erase = 1; /* set and start erase operation */
+    MXC_FLC->ctrl_f = fcntl;
+    
+    do {
+        fcntl = MXC_FLC->ctrl_f;
+    } while (fcntl.pending); /* wait until done */
+    
+    fcntl = MXC_FLC->ctrl_f;
+    fcntl.erase_code = 0; /* lock flash */
+    fcntl.flsh_unlock = 0;
+    MXC_FLC->ctrl_f = fcntl;
+
+    return 0;
+}
+
+int32_t FLC_WriteBlock(uint32_t address, const void *data, uint32_t length, uint8_t unlock_key)
+{
+    uint32_t *word = (uint32_t *) data;
+
+    if(!MXC_ICC->ctrl_stat_f.enable) {
+        return -1;
+    }
+
+    if(address & 3) { /* address needs to be aligned with word */
+        return -1;
+    }
+
+    length = length & 0xfffffffc;
+
+    mxc_flc_ctrl_t fcntl = MXC_FLC->ctrl_f;
+    fcntl.erase_code = 0; /* clear erase code */
+    fcntl.auto_incre_mode = 0; /* clear burst */
+    MXC_FLC->ctrl_f = fcntl;
+
+    fcntl.flsh_unlock = unlock_key; /* set unlock */
+    MXC_FLC->ctrl_f = fcntl;
+
+    while (length)
+    {
+        MXC_FLC->faddr = address;
+        MXC_FLC->fdata = *word;
+        
+        fcntl = MXC_FLC->ctrl_f;
+        fcntl.write = 1;
+        MXC_FLC->ctrl_f = fcntl;
+
+        address += 4;
+        word++;
+        length -= 4;
+
+        do {
+            fcntl = MXC_FLC->ctrl_f;
+        } while (fcntl.pending);
+    }
+
+    fcntl = MXC_FLC->ctrl_f;
+    fcntl.erase_code = 0; /* lock flash */
+    fcntl.flsh_unlock = 0;
+    MXC_FLC->ctrl_f = fcntl;
+
+    return 0;
+}
+