X-Git-Url: https://hackdaworld.org/gitweb/?p=my-code%2Farm.git;a=blobdiff_plain;f=betty%2Fpwm.h;fp=betty%2Fpwm.h;h=9d1903f82b30018f206a37632c584915c62f3e0c;hp=0000000000000000000000000000000000000000;hb=773f6a91053e99de8afaa6e4b450e13f416ba98c;hpb=9f1a71389dff6cddd11c4b9975a0d1b91806ee2d

diff --git a/betty/pwm.h b/betty/pwm.h
new file mode 100644
index 0000000..9d1903f
--- /dev/null
+++ b/betty/pwm.h
@@ -0,0 +1,44 @@
+/*
+ * pwm.h - arm pwm interface header file
+ *
+ * author: hackbard@hackdaworld.org
+ *
+ */
+
+#ifndef PWM_H
+#define PWM_H
+
+#include "lpc2xxx.h"
+#include "types.h"
+
+/* macros */
+#define pwm_enable PWMTCR=0x0b
+
+/* defines */
+#define PWM_SINGLE_EDGE		0x00
+#define PWM_DOUBLE_EDGE		0x01
+
+#define PWM_MATCH_INTERRUPT	0x01
+#define PWM_MATCH_RESET		0x02
+#define PWM_MATCH_STOP		0x04
+
+#define PWM_SET			0x00
+#define PWM_INVALID_CHAN	0x01
+#define PWM_STUPID		0x02
+
+#define PWM_CHAN0		0
+#define PWM_CHAN1		1
+#define PWM_CHAN2		2
+#define PWM_CHAN3		3
+#define PWM_CHAN4		4
+#define PWM_CHAN5		5
+#define PWM_CHAN6		6
+
+/* function prototypes */
+
+void pwm_set_rate_and_prescaler(u32 rate,u32 prescaler);
+int pwm_config(u8 pwmchan,u8 mode,u32 val1,u32 val2);
+int pwm_update_match(u8 pwmchan,u8 mode,u32 val1,u32 val2);
+void pwm_match_ctrl_config(u8 matchreg,u8 ctrl);
+
+#endif