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Change touch button for MKL27Z

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This commit is contained in:
NIIBE Yutaka
2016-07-01 10:58:05 +09:00
parent f5880ee5d5
commit 1f23bd4048
3 changed files with 28 additions and 14 deletions
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4
example-fs-bb48/command.c
View File

@@ -142,8 +142,8 @@ get_hex (struct tty *tty, const char *s, uint32_t *v_p)
}
#define TOUCH_VALUE_HIGH 195
#define TOUCH_VALUE_LOW 150
#define TOUCH_VALUE_HIGH 100
#define TOUCH_VALUE_LOW 50
static void
cmd_button (struct tty *tty, const char *line)
{

34
example-fs-bb48/touch.c
View File

@@ -24,22 +24,28 @@ static struct TPM *const TPM1 = (struct TPM *)0x40039000;
static chopstx_intr_t tpm1_intr;
#define INTR_REQ_TPM1 18
uint16_t
touch_get (void)
static void
gpio_assert_low (void)
{
chopstx_prio_t prio_old;
prio_old = chopstx_setpriority (CHOPSTX_PRIO_INHIBIT_PREEMPTION);
/* Assert LOW. */
PORTB->PCR1 = (1<<8) /* GPIO */
| (0<<6) /* DriveStrengthEnable=0 */
| (0<<4) /* PassiveFilterEnable=0 */
| (1<<2) /* SlewRateEnable = slow */
| (0<<1) /* pull enable = 0 */
| (0<<0) /* puddselect= 0 */
| (0<<0) /* pull up select= 0 */
;
GPIOB->PCOR = (1 << 1); /* PTB1: Clear: Output 0 */
}
uint16_t
touch_get (void)
{
chopstx_prio_t prio_old;
uint16_t v;
prio_old = chopstx_setpriority (CHOPSTX_PRIO_INHIBIT_PREEMPTION);
/*
* Start the timer's counter.
* TOF clear, TOIE=1, CPWMS=0, CMOD=1, PS=011.
@@ -52,18 +58,23 @@ touch_get (void)
| (0<<4) /* PassiveFilterEnable=0 */
| (1<<2) /* SlewRateEnable = slow */
| (0<<1) /* pull enable = 0 */
| (0<<0) /* puddselect= 0 */
| (0<<0) /* pullup select= 0 */
;
chopstx_setpriority (prio_old);
chopstx_intr_wait (&tpm1_intr);
gpio_assert_low ();
v = TPM1->C1V;
/* Clear overflow and CH1 capture. */
TPM1->STATUS = 0x102;
/* Stop the counter. */
/* Stop the timer. */
TPM1->SC = 0;
TPM1->CNT = 0xffff; /* Writing causes reset of the counter. */
return TPM1->C1V;
return v;
}
@@ -81,4 +92,7 @@ touch_init (void)
/* Stop on overflow: CSOO=1 */
/* Run the timer in the debug mode */
TPM1->CONF = 0x000200c0;
TPM1->CNT = 0xffff; /* Writing causes reset of the counter. */
gpio_assert_low ();
}

4
mcu/clk_gpio_init-mkl27z.c
View File

@@ -88,14 +88,14 @@ gpio_init (void)
| (0<<4) /* PassiveFilterEnable=0 */
| (1<<2) /* SlewRateEnable = slow */
| (0<<1) /* pull enable = 0 */
| (0<<0) /* puddselect= 0 */
| (0<<0) /* pull up select= 0 */
;
PORTB->PCR1 = (1<<8) /* GPIO */
| (0<<6) /* DriveStrengthEnable=0 */
| (0<<4) /* PassiveFilterEnable=0 */
| (1<<2) /* SlewRateEnable = slow */
| (0<<1) /* pull enable = 0 */
| (0<<0) /* puddselect= 0 */
| (0<<0) /* pull up select= 0 */
;
GPIOB->PDDR = (1 << 1) | (1 << 0); /* PTB0, PTB1 : Output */