bertos/cpu/arm/drv/pwm_test.c

   1 /**
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  29  * Copyright 2005 Develer S.r.l. (http://www.develer.com/)
  30  * -->
  31  *
  32  *
  33  * \brief Test for PWM driver (implementation)
  34  *
  35  * \version $Id$
  36  *
  37  * \author Daniele Basile <asterix@develer.com>
  38  */
  39
  40 #include <cfg/macros.h>
  41 #include <cfg/debug.h>
  42
  43 #include <cpu/types.h>
  44 #include <cpu/irq.h>
  45
  46 #include <drv/pwm.h>
  47 #include <drv/pwm_at91.h>
  48 #include <drv/timer.h>
  49 #include <drv/sysirq_at91.h>
  50
  51 #include <io/arm.h>
  52
  53 /*
  54  * Esample of value for duty cycle"
  55  *
  56  * - 100% => 0xFFFFFFFF
  57  * - 80%  => 0xCCCCCCCC
  58  * - 75%  => 0xBFFFFFFF
  59  * - 50%  => 0x7FFFFFFF
  60  * - 25%  => 0x3FFFFFFF
  61  * - 33%  => 0x55555555
  62  * - 16%  => 0x2AAAAAAA
  63  */
  64
  65 #define PWM_TEST_CH0                     0
  66 #define PWM_TEST_CH0_FREQ            100UL // 100Hz
  67 #define PWM_TEST_CH0_DUTY           0xBFFF // 80%
  68
  69 #define PWM_TEST_CH1                     1
  70 #define PWM_TEST_CH1_FREQ           1000UL  // 1000Hz
  71 #define PWM_TEST_CH1_DUTY           0xBFFF  // 75%
  72
  73 #define PWM_TEST_CH2                     2
  74 #define PWM_TEST_CH2_FREQ          12356UL  // 12356Hz
  75 #define PWM_TEST_CH2_DUTY           0x7FFF  // 50%
  76
  77 #define PWM_TEST_CH3                     3
  78 #define PWM_TEST_CH3_FREQ         100000UL  // 100KHz
  79 #define PWM_TEST_CH3_DUTY           0x5555  // 33%
  80
  81 #define PWM_TEST_CH_SET(index) \
  82         do { \
  83                         pwm_setFrequency(PWM_TEST_CH##index , PWM_TEST_CH##index##_FREQ); \
  84                         pwm_setDuty(PWM_TEST_CH##index, PWM_TEST_CH##index##_DUTY); \
  85                         pwm_enable(PWM_TEST_CH##index, true); \
  86         } while (0)
  87
  88
  89 /**
  90  * Setup all needed to test PWM on AT91
  91  *
  92  */
  93 int pwm_testSetup(void)
  94 {
  95         IRQ_ENABLE;
  96         kdbg_init();
  97         sysirq_init();
  98         timer_init();
  99
 100         pwm_init();
 101
 102         return 0;
 103 }
 104
 105
 106 /**
 107  * Test suit for genation of pwm waveform.
 108  *
 109  */
 110 int pwm_testRun(void)
 111 {
 112
 113         kputs("PWM test\n\n");
 114
 115         kputs("Init pwm..");
 116         pwm_testSetup();
 117         kputs("done.\n");
 118
 119         PWM_TEST_CH_SET(0);
 120         kprintf("PWM test set ch[%d] =>freq[%ld], duty[%d]\n", PWM_TEST_CH0, PWM_TEST_CH0_FREQ, PWM_TEST_CH0_DUTY);
 121         PWM_TEST_CH_SET(1);
 122         kprintf("PWM test set ch[%d] =>freq[%ld], duty[%d]\n", PWM_TEST_CH1, PWM_TEST_CH1_FREQ, PWM_TEST_CH1_DUTY);
 123         PWM_TEST_CH_SET(2);
 124         kprintf("PWM test set ch[%d] =>freq[%ld], duty[%d]\n", PWM_TEST_CH2, PWM_TEST_CH2_FREQ, PWM_TEST_CH2_DUTY);
 125         PWM_TEST_CH_SET(3);
 126         kprintf("PWM test set ch[%d] =>freq[%ld], duty[%d]\n", PWM_TEST_CH3, PWM_TEST_CH3_FREQ, PWM_TEST_CH3_DUTY);
 127
 128         return 0;
 129 }
 130
 131 /**
 132  *
 133  */
 134 int pwm_testTearDown(void)
 135 {
 136         /*    */
 137         return 0;
 138 }
 139
 140 #ifdef _TEST
 141
 142 int main(void)
 143 {
 144         pwm_testRun();
 145
 146
 147
 148         kputs("Parto con il test!\n");
 149         kprintf("PWM CURRENT ch[%d] => cmr[%ld], dty[%ld], prd[%ld], up[%ld]\n", PWM_TEST_CH0, PWM_CMR0, PWM_CDTY0, PWM_CPRD0, PWM_CUPD0);
 150
 151         for(;;)
 152         {
 153
 154                 pwm_setDuty(0,0);
 155                 timer_delay(5000);
 156                 kprintf("TEST10 => cmr[%ld], dty[%ld], prd[%ld], up[%ld]\n", PWM_CMR0, PWM_CDTY0, PWM_CPRD0, PWM_CUPD0);
 157
 158
 159                 pwm_setDuty(0,0x7FFF);
 160                 timer_delay(5000);
 161                 kprintf("TEST50 => cmr[%ld], dty[%ld], prd[%ld], up[%ld]\n", PWM_CMR0, PWM_CDTY0, PWM_CPRD0, PWM_CUPD0);
 162
 163
 164                 pwm_setDuty(0,0x5555);
 165                 timer_delay(5000);
 166                 kprintf("TEST33 => cmr[%ld], dty[%ld], prd[%ld], up[%ld]\n", PWM_CMR0, PWM_CDTY0, PWM_CPRD0, PWM_CUPD0);
 167
 168
 169                 pwm_setDuty(0,0xCCCC);
 170                 timer_delay(5000);
 171                 kprintf("TEST80 => cmr[%ld], dty[%ld], prd[%ld], up[%ld]\n", PWM_CMR0, PWM_CDTY0, PWM_CPRD0, PWM_CUPD0);
 172                 kputs("--------\n");
 173
 174
 175 //              kprintf("PWM test ch[%d] => cmr[%ld], dty[%ld], prd[%ld], up[%ld]\n", PWM_TEST_CH0, PWM_CMR0, PWM_CDTY0, PWM_CPRD0, PWM_CUPD0);
 176 //              kprintf("PWM test ch[%d] => cmr[%ld], dty[%ld], prd[%ld], up[%ld]\n", PWM_TEST_CH1, PWM_CMR1, PWM_CDTY1, PWM_CPRD1, PWM_CUPD1);
 177 //              kprintf("PWM test ch[%d] => cmr[%ld], dty[%ld], prd[%ld], up[%ld]\n", PWM_TEST_CH2, PWM_CMR2, PWM_CDTY2, PWM_CPRD2, PWM_CUPD2);
 178 //              kprintf("PWM test ch[%d] => cmr[%ld], dty[%ld], prd[%ld], up[%ld]\n", PWM_TEST_CH3, PWM_CMR3, PWM_CDTY3, PWM_CPRD3, PWM_CUPD3);
 179         }
 180
 181 }
 182 #endif
 183
 184