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SSD2119: PWM period change

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100 kHz PWM period made small induction coil onboard LCD to moan if the
pulse width was smaller than 100%. I changed it to 1MHz.
This commit is contained in:
Mateusz Tomaszkiewicz 2013-02-22 00:54:11 +01:00
parent cec4628a97
commit 51b292d3b9
2 changed files with 16 additions and 3 deletions
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14
drivers/gdisp/SSD2119/gdisp_lld_board_embest_dmstf4bb.h
View file

@ -40,6 +40,20 @@
#define SET_RST palSetPad(GPIOD, 3); #define SET_RST palSetPad(GPIOD, 3);
#define CLR_RST palClearPad(GPIOD, 3); #define CLR_RST palClearPad(GPIOD, 3);
/* PWM configuration structure. We use timer 4 channel 2 (orange LED on board). */
static const PWMConfig pwmcfg = {
1000000, /* 1 MHz PWM clock frequency. */
100, /* PWM period is 100 cycles. */
NULL,
{
{PWM_OUTPUT_ACTIVE_HIGH, NULL},
{PWM_OUTPUT_ACTIVE_HIGH, NULL},
{PWM_OUTPUT_ACTIVE_HIGH, NULL},
{PWM_OUTPUT_ACTIVE_HIGH, NULL}
},
0
};
/** /**
* @brief Initialise the board for the display. * @brief Initialise the board for the display.
* @notes This board definition uses GPIO and assumes exclusive access to these GPIO pins * @notes This board definition uses GPIO and assumes exclusive access to these GPIO pins

5
drivers/gdisp/SSD2119/gdisp_lld_board_embest_dmstf4bb_fsmc.h
View file

@ -38,8 +38,8 @@
/* PWM configuration structure. We use timer 4 channel 2 (orange LED on board). */ /* PWM configuration structure. We use timer 4 channel 2 (orange LED on board). */
static const PWMConfig pwmcfg = { static const PWMConfig pwmcfg = {
100000, /* 100kHz PWM clock frequency. */ 1000000, /* 1 MHz PWM clock frequency. */
100, /* PWM period is 128 cycles. */ 100, /* PWM period is 100 cycles. */
NULL, NULL,
{ {
{PWM_OUTPUT_ACTIVE_HIGH, NULL}, {PWM_OUTPUT_ACTIVE_HIGH, NULL},
@ -47,7 +47,6 @@ static const PWMConfig pwmcfg = {
{PWM_OUTPUT_ACTIVE_HIGH, NULL}, {PWM_OUTPUT_ACTIVE_HIGH, NULL},
{PWM_OUTPUT_ACTIVE_HIGH, NULL} {PWM_OUTPUT_ACTIVE_HIGH, NULL}
}, },
/* HW dependent part.*/
0 0
}; };