166 lines
3.9 KiB
C
166 lines
3.9 KiB
C
/*
|
|
* This file is subject to the terms of the GFX License, v1.0. If a copy of
|
|
* the license was not distributed with this file, you can obtain one at:
|
|
*
|
|
* http://chibios-gfx.com/license.html
|
|
*/
|
|
|
|
/**
|
|
* @file drivers/gdisp/SSD2119/gdisp_lld_board_embest_dmstf4bb.h
|
|
* @brief GDISP Graphic Driver subsystem board FSMC interface for the SSD2119 display.
|
|
*
|
|
* @addtogroup GDISP
|
|
* @{
|
|
*/
|
|
|
|
#ifndef _GDISP_LLD_BOARD_H
|
|
#define _GDISP_LLD_BOARD_H
|
|
|
|
/* Using FSMC A19 (PE3) as DC */
|
|
#define GDISP_REG (*((volatile uint16_t *) 0x60000000)) /* DC = 0 */
|
|
#define GDISP_RAM (*((volatile uint16_t *) 0x60100000)) /* DC = 1 */
|
|
|
|
#define SET_RST palSetPad(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.
|
|
* @notes This board definition uses GPIO and assumes exclusive access to these GPIO pins
|
|
*
|
|
* @notapi
|
|
*/
|
|
static inline void init_board(void) {
|
|
unsigned char FSMC_Bank;
|
|
|
|
/* STM32F4 FSMC init */
|
|
rccEnableAHB3(RCC_AHB3ENR_FSMCEN, 0);
|
|
|
|
/* Group pins */
|
|
IOBus busD = {GPIOD, (1 << 0) | (1 << 1) | (1 << 4) | (1 << 5) | (1 << 7) | (1 << 8) |
|
|
(1 << 9) | (1 << 10) | (1 << 14) | (1 << 15), 0};
|
|
|
|
IOBus busE = {GPIOE, (1 << 3) | (1 << 7) | (1 << 8) | (1 << 9) | (1 << 10) | (1 << 11) | (1 << 12) |
|
|
(1 << 13) | (1 << 14) | (1 << 15), 0};
|
|
|
|
/* FSMC is an alternate function 12 (AF12) */
|
|
palSetBusMode(&busD, PAL_MODE_ALTERNATE(12));
|
|
palSetBusMode(&busE, PAL_MODE_ALTERNATE(12));
|
|
|
|
FSMC_Bank = 0;
|
|
|
|
/* FSMC timing */
|
|
FSMC_Bank1->BTCR[FSMC_Bank+1] = (FSMC_BTR1_ADDSET_1 | FSMC_BTR1_ADDSET_3) \
|
|
| (FSMC_BTR1_DATAST_1 | FSMC_BTR1_DATAST_3) \
|
|
| (FSMC_BTR1_BUSTURN_1 | FSMC_BTR1_BUSTURN_3) ;
|
|
|
|
/* Bank1 NOR/SRAM control register configuration
|
|
* This is actually not needed as already set by default after reset */
|
|
FSMC_Bank1->BTCR[FSMC_Bank] = FSMC_BCR1_MWID_0 | FSMC_BCR1_WREN | FSMC_BCR1_MBKEN;
|
|
|
|
/* Display backlight control */
|
|
/* TIM4 is an alternate function 2 (AF2) */
|
|
pwmStart(&PWMD4, &pwmcfg);
|
|
palSetPadMode(GPIOD, 13, PAL_MODE_ALTERNATE(2));
|
|
pwmEnableChannel(&PWMD4, 1, 100);
|
|
}
|
|
|
|
/**
|
|
* @brief Set or clear the lcd reset pin.
|
|
*
|
|
* @param[in] state TRUE = lcd in reset, FALSE = normal operation
|
|
*
|
|
* @notapi
|
|
*/
|
|
static inline void setpin_reset(bool_t state) {
|
|
if (state) {
|
|
CLR_RST;
|
|
} else {
|
|
SET_RST;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @brief Set the lcd back-light level.
|
|
*
|
|
* @param[in] percent 0 to 100%
|
|
*
|
|
* @notapi
|
|
*/
|
|
static inline void set_backlight(uint8_t percent) {
|
|
pwmEnableChannel(&PWMD4, 1, percent);
|
|
}
|
|
|
|
/**
|
|
* @brief Take exclusive control of the bus
|
|
* @note Not needed, not implemented
|
|
*
|
|
* @notapi
|
|
*/
|
|
static inline void acquire_bus(void) {
|
|
/* Nothing to do here since LCD is the only device on that bus */
|
|
}
|
|
|
|
/**
|
|
* @brief Release exclusive control of the bus
|
|
* @note Not needed, not implemented
|
|
*
|
|
* @notapi
|
|
*/
|
|
static inline void release_bus(void) {
|
|
/* Nothing to do here since LCD is the only device on that bus */
|
|
}
|
|
|
|
/**
|
|
* @brief Send data to the index register.
|
|
*
|
|
* @param[in] index The index register to set
|
|
*
|
|
* @notapi
|
|
*/
|
|
static inline void write_index(uint16_t index) {
|
|
GDISP_REG = index;
|
|
}
|
|
|
|
/**
|
|
* @brief Send data to the lcd.
|
|
*
|
|
* @param[in] data The data to send
|
|
*
|
|
* @notapi
|
|
*/
|
|
static inline void write_data(uint16_t data) {
|
|
GDISP_RAM = data;
|
|
}
|
|
|
|
#if GDISP_HARDWARE_READPIXEL || GDISP_HARDWARE_SCROLL || defined(__DOXYGEN__)
|
|
/**
|
|
* @brief Read data from the lcd.
|
|
*
|
|
* @return The data from the lcd
|
|
* @note The chip select may need to be asserted/de-asserted
|
|
* around the actual spi read
|
|
*
|
|
* @notapi
|
|
*/
|
|
static inline uint16_t read_data(void) {
|
|
return GDISP_RAM;
|
|
}
|
|
#endif
|
|
|
|
#endif /* _GDISP_LLD_BOARD_H */
|
|
/** @} */
|