Add test suite for ramp and pwm driver.

[bertos.git] / drv / pwm_test.c

diff --git a/drv/pwm_test.c b/drv/pwm_test.c
new file mode 100644 (file)
index 0000000..cb2dc84
--- /dev/null
+++ b/drv/pwm_test.c
@@ -0,0 +1,108 @@
+/**
+ * \file
+ * <!--
+ * This file is part of BeRTOS.
+ *
+ * Bertos is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * As a special exception, you may use this file as part of a free software
+ * library without restriction.  Specifically, if other files instantiate
+ * templates or use macros or inline functions from this file, or you compile
+ * this file and link it with other files to produce an executable, this
+ * file does not by itself cause the resulting executable to be covered by
+ * the GNU General Public License.  This exception does not however
+ * invalidate any other reasons why the executable file might be covered by
+ * the GNU General Public License.
+ *
+ * Copyright 2005 Develer S.r.l. (http://www.develer.com/)
+ * -->
+ *
+ *
+ * \brief Test for PWM driver (implementation)
+ *
+ * \version $Id$
+ *
+ * \author Daniele Basile <asterix@develer.com>
+ */
+
+#include <cpu/types.h>
+#include <cpu/irq.h>
+
+#include <drv/pwm.h>
+#include <drv/pwm_at91.h>
+
+#include <cfg/macros.h>
+#include <cfg/debug.h>
+
+/*
+ * Esample of value for duty cycle"
+ *
+ * - 100% => 0xFFFFFFFF
+ * - 80%  => 0xCCCCCCCC
+ * - 75%  => 0xBFFFFFFF
+ * - 50%  => 0x7FFFFFFF
+ * - 25%  => 0x3FFFFFFF
+ * - 33%  => 0x55555555
+ * - 16%  => 0x2AAAAAAA
+ */
+
+#define PWM_TEST_CH0                     0
+#define PWM_TEST_CH0_FREQ            100UL // 100Hz
+#define PWM_TEST_CH0_DUTY           0xCCCC // 80%
+
+#define PWM_TEST_CH1                     1
+#define PWM_TEST_CH1_FREQ           1000UL  // 1000Hz
+#define PWM_TEST_CH1_DUTY           0xBFFF  // 75%
+
+#define PWM_TEST_CH2                     2
+#define PWM_TEST_CH2_FREQ            12356  // 12356Hz
+#define PWM_TEST_CH2_DUTY           0x7FFF  // 50%
+
+#define PWM_TEST_CH3                     3
+#define PWM_TEST_CH3_FREQ         100000UL  // 100KHz
+#define PWM_TEST_CH3_DUTY           0x5555  // 33%
+
+#define PWM_TEST_CH_SET(index) \
+       do { \
+                       pwm_setFrequency(PWM_TEST_CH##index , PWM_TEST_CH##index##_FREQ); \
+                       pwm_setDuty(PWM_TEST_CH##index, PWM_TEST_CH##index##_DUTY); \
+                       pwm_enable(PWM_TEST_CH##index, true); \
+       } while (0)
+
+/**
+ * Test suit for genation of pwm waveform.
+ *
+ */
+void pwm_test(void)
+{
+
+       pwm_init();
+       kputs("Init pwm..\n");
+
+       PWM_TEST_CH_SET(0);
+       kprintf("Set pwm ch[%d] =>freq[%ld], duty[%d]\n", PWM_TEST_CH0, PWM_TEST_CH0_FREQ, PWM_TEST_CH0_DUTY);
+       PWM_TEST_CH_SET(1);
+       kprintf("Set pwm ch[%d] =>freq[%ld], duty[%d]\n", PWM_TEST_CH1, PWM_TEST_CH1_FREQ, PWM_TEST_CH1_DUTY);
+       PWM_TEST_CH_SET(2);
+       kprintf("Set pwm ch[%d] =>freq[%ld], duty[%d]\n", PWM_TEST_CH2, PWM_TEST_CH2_FREQ, PWM_TEST_CH2_DUTY);
+       PWM_TEST_CH_SET(3);
+       kprintf("Set pwm ch[%d] =>freq[%ld], duty[%d]\n", PWM_TEST_CH3, PWM_TEST_CH3_FREQ, PWM_TEST_CH3_DUTY);
+}
+
+
+
+
+
+