adding pwm control

.gitignore

@@ -1,2 +1,5 @@
 build
 *.jpg
+.project
+.cproject
+.settings/

CMakeLists.txt

@@ -21,7 +21,7 @@ endif()
 include_directories(/home/pi/samplecodes/ncnn/build/install/include/)
 link_directories(/home/pi/samplecodes/ncnn/build/install/lib/)
 
-add_executable (fastdonkey main.cpp)
+add_executable (fastdonkey main.cpp pwm.c mailbox.c cpuinfo.c)
 add_executable (ncnn_test ncnn_test.cpp)
 
 

cpuinfo.c

@@ -0,0 +1,129 @@
+/*
+ * This file is part of RPIO.
+ *
+ * Copyright
+ *
+ *     Copyright (C) 2013 Chris Hager <[email protected]>
+ *
+ * License
+ *
+ *     This program is free software: you can redistribute it and/or modify
+ *     it under the terms of the GNU Lesser 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 Lesser General Public License for more details at
+ *     <http://www.gnu.org/licenses/lgpl-3.0-standalone.html>
+ *
+ * Documentation
+ *
+ *     http://pythonhosted.org/RPIO
+ */
+#include <stdio.h>
+#include <string.h>
+#include "cpuinfo.h"
+
+// Writes the hex revision str into the argument and returns:
+//   2  (raspberry with revision 2 pin setup)
+//   1  (raspberry with revision 1 pin setup)
+//   0  (not a raspberry pi)
+//   -1 (could not open /proc/cpuinfo)
+//
+// revision_hex will be four characters revision id (eg. '0004'),
+// the over-voltage header, if present, is removed (since it is
+// not consistently present on all overclocked boards).
+int
+get_cpuinfo_revision(char *revision_hex)
+{
+    FILE *fp;
+    char buffer[1024];
+    char hardware[1024];
+    int  rpi_found = 0;
+	int  bcm2709 = 0;
+	int board_rev = 3;
+
+    if ((fp = fopen("/proc/cpuinfo", "r")) == NULL)
+        return -1;
+
+    while(!feof(fp)) {
+        fgets(buffer, sizeof(buffer) , fp);
+        sscanf(buffer, "Hardware	: %s", hardware);
+        if (strcmp(hardware, "BCM2708") == 0||
+            strcmp(hardware, "BCM2709") == 0||
+            strcmp(hardware, "BCM2835") == 0||
+            strcmp(hardware, "BCM2836") == 0)
+            rpi_found = 1;
+
+        if (strcmp(hardware, "BCM2709") == 0)
+            bcm2709 = 1;
+        sscanf(buffer, "Revision	: %s", revision_hex);
+    }
+    fclose(fp);
+
+    if (!rpi_found) {
+        revision_hex = NULL;
+        return 0;
+    }
+
+    // If over-voltage is present, remove it
+    char* pos = strstr(revision_hex, "1000");
+    if (pos && pos - revision_hex == 0 && strlen(revision_hex) > 5) {
+        strcpy(revision_hex, revision_hex+(strlen(revision_hex) - 4));
+    }
+
+    // Returns revision
+    if ((strcmp(revision_hex, "0002") == 0) ||
+        (strcmp(revision_hex, "0003") == 0))
+        board_rev = 1;
+    else if ((strcmp(revision_hex, "0004") == 0)
+        || (strcmp(revision_hex, "0005") == 0)
+        || (strcmp(revision_hex, "0006") == 0)
+        || (strcmp(revision_hex, "0007") == 0)
+        || (strcmp(revision_hex, "0008") == 0)
+        || (strcmp(revision_hex, "0009") == 0)
+        || (strcmp(revision_hex, "000d") == 0)
+        || (strcmp(revision_hex, "000e") == 0)
+        || (strcmp(revision_hex, "000f") == 0))
+        board_rev = 2;
+    else   // We'll call Model A+, B+, Pi2, Pi3 and Zero rev3
+        board_rev = 3;
+
+    return (bcm2709 << 8) | board_rev;
+}
+
+uint32_t get_peri_base(void){
+	uint32_t base = 0x20000000;
+	FILE * filp;
+	char buf[512];
+
+	filp = fopen ("/proc/cpuinfo", "r");
+
+	if (filp != NULL)
+	{
+		while (fgets(buf, sizeof(buf), filp) != NULL)
+		{
+			if (!strncasecmp("model name", buf, 10))
+			{
+				if (strstr (buf, "ARMv6") != NULL)
+				{
+					base = 0x20000000;
+					break;
+				}
+				else if ((strstr (buf, "ARMv7") != NULL) | //
+						(strstr (buf, "ARMv8") != NULL) | 
+						(strstr (buf, "CPU architecture: 7") != NULL) | // aarch64 kernel may report this way
+						(strstr (buf, "CPU architecture: 8") != NULL)) // aarch64 kernel may report this way
+				{
+					base = 0x3F000000;
+					break;
+				}
+			}
+		}
+
+		fclose(filp);
+	}
+	return base;
+}

cpuinfo.h

@@ -0,0 +1,30 @@
+/*
+ * This file is part of RPIO.
+ *
+ * Copyright
+ *
+ *     Copyright (C) 2013 Chris Hager <[email protected]>
+ *
+ * License
+ *
+ *     This program is free software: you can redistribute it and/or modify
+ *     it under the terms of the GNU Lesser 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 Lesser General Public License for more details at
+ *     <http://www.gnu.org/licenses/lgpl-3.0-standalone.html>
+ *
+ * Documentation
+ *
+ *     http://pythonhosted.org/RPIO
+ */
+
+#include <stdint.h>
+
+int get_cpuinfo_revision(char *revision_hex);
+
+uint32_t get_peri_base(void);