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/*
* This file is subject to the terms of the GFX License. If a copy of
* the license was not distributed with this file, you can obtain one at:
*
* http://ugfx.org/license.html
*/
/* Board interface definitions for ED060SC4 PrimeView E-ink panel.
*
* This file corresponds to the connections shown in example_schematics.png,
* and is designed to interface with ChibiOS/RT.
*
* Please note that this file has never been tested in exactly this pin
* configuration, because the actual boards I have are slightly different.
*/
#ifndef _GDISP_LLD_BOARD_H
#define _GDISP_LLD_BOARD_H
#include <hal.h>
/*
* IO pins assignments.
*/
#define GPIOB_EINK_VDD 0
#define GPIOB_EINK_GMODE 1
#define GPIOB_EINK_SPV 2
#define GPIOB_EINK_CKV 3
#define GPIOB_EINK_CL 4
#define GPIOB_EINK_LE 5
#define GPIOB_EINK_OE 6
#define GPIOB_EINK_SPH 7
#define GPIOB_EINK_D0 8
#define GPIOB_EINK_D1 9
#define GPIOB_EINK_D2 10
#define GPIOB_EINK_D3 11
#define GPIOB_EINK_D4 12
#define GPIOB_EINK_D5 13
#define GPIOB_EINK_D6 14
#define GPIOB_EINK_D7 15
#define GPIOC_SMPS_CTRL 13
#define GPIOC_VPOS_CTRL 14
#define GPIOC_VNEG_CTRL 15
/* Set up IO pins for the panel connection. */
static GFXINLINE void init_board(void) {
/* Main SMPS power control, active low
* (open collector so that MOSFET gate can be pulled up to Vbat) */
palWritePad(GPIOC, GPIOC_SMPS_CTRL, true);
palSetPadMode(GPIOC, GPIOC_SMPS_CTRL, PAL_MODE_OUTPUT_OPENDRAIN);
/* Power control for the positive & negative side */
palWritePad(GPIOC, GPIOC_VPOS_CTRL, false);
palSetPadMode(GPIOC, GPIOC_VPOS_CTRL, PAL_MODE_OUTPUT_PUSHPULL);
palWritePad(GPIOC, GPIOC_VNEG_CTRL, false);
palSetPadMode(GPIOC, GPIOC_VNEG_CTRL, PAL_MODE_OUTPUT_PUSHPULL);
/* Main data bus */
palWritePort(GPIOB, 0);
palSetGroupMode(GPIOB, 0xFFFF, 0, PAL_MODE_OUTPUT_PUSHPULL);
}
/* Delay for display waveforms. Should be an accurate microsecond delay. */
static void eink_delay(int us)
{
halPolledDelay(US2RTT(us));
}
/* Turn the E-ink panel Vdd supply (+3.3V) on or off. */
static GFXINLINE void setpower_vdd(bool_t on) {
palWritePad(GPIOB, GPIOB_SMPS_CTRL, !on);
palWritePad(GPIOA, GPIOA_EINK_VDD, on);
}
/* Turn the E-ink panel negative supplies (-15V, -20V) on or off. */
static GFXINLINE void setpower_vneg(bool_t on) {
palWritePad(GPIOA, GPIOA_VNEG_CTRL, on);
}
/* Turn the E-ink panel positive supplies (-15V, -20V) on or off. */
static GFXINLINE void setpower_vpos(bool_t on) {
palWritePad(GPIOA, GPIOA_VPOS_CTRL, on);
}
/* Set the state of the LE (source driver Latch Enable) pin. */
static GFXINLINE void setpin_le(bool_t on) {
palWritePad(GPIOB, GPIOB_EINK_LE, on);
}
/* Set the state of the OE (source driver Output Enable) pin. */
static GFXINLINE void setpin_oe(bool_t on) {
palWritePad(GPIOB, GPIOB_EINK_OE, on);
}
/* Set the state of the CL (source driver Clock) pin. */
static GFXINLINE void setpin_cl(bool_t on) {
palWritePad(GPIOB, GPIOB_EINK_CL, on);
}
/* Set the state of the SPH (source driver Start Pulse Horizontal) pin. */
static GFXINLINE void setpin_sph(bool_t on) {
palWritePad(GPIOB, GPIOB_EINK_SPH, on);
}
/* Set the state of the D0-D7 (source driver Data) pins. */
static GFXINLINE void setpins_data(uint8_t value) {
palWriteGroup(GPIOB, 0xFF, GPIOB_EINK_D0, value);
}
/* Set the state of the CKV (gate driver Clock Vertical) pin. */
static GFXINLINE void setpin_ckv(bool_t on) {
palWritePad(GPIOB, GPIOB_EINK_CKV, on);
}
/* Set the state of the GMODE (gate driver Gate Mode) pin. */
static GFXINLINE void setpin_gmode(bool_t on) {
palWritePad(GPIOC, GPIOC_EINK_GMODE, on);
}
/* Set the state of the SPV (gate driver Start Pulse Vertical) pin. */
static GFXINLINE void setpin_spv(bool_t on) {
palWritePad(GPIOB, GPIOB_EINK_SPV, on);
}
#endif
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