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