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63c1e8ba00
Add lws_display and minimal example support for esp32-wrover to match wsp32-heltec-wb32 Since no usable buttons that don't affect something else on wrover kit, assumes a button to 0V on GPIO14.
73 lines
2.4 KiB
C
73 lines
2.4 KiB
C
/*
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* Generic I2C ops
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*
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* Copyright (C) 2019 - 2020 Andy Green <andy@warmcat.com>
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to
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* deal in the Software without restriction, including without limitation the
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* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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* sell copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*
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* This is like an abstract class for spi, a real implementation provides
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* functions for the ops that use the underlying OS arrangements.
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*
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* It uses descriptor / queuing semantics but eg the GPIO BB implementantion is
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* synchronous.
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*/
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#if !defined(__LWS_SPI_H__)
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#define __LWS_SPI_H__
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#include <stdint.h>
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#include <stddef.h>
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typedef int (*lws_spi_cb_t)(void *opaque);
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enum {
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LWSSPIMODE_CPOL = (1 << 0),
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LWSSPIMODE_CPHA = (1 << 1),
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LWS_SPI_BUSMODE_CLK_IDLE_LOW_SAMP_RISING = 0,
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LWS_SPI_BUSMODE_CLK_IDLE_HIGH_SAMP_RISING = LWSSPIMODE_CPOL,
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LWS_SPI_BUSMODE_CLK_IDLE_LOW_SAMP_FALLING = LWSSPIMODE_CPHA,
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LWS_SPI_BUSMODE_CLK_IDLE_HIGH_SAMP_FALLING = LWSSPIMODE_CPHA |
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LWSSPIMODE_CPOL,
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LWS_SPI_TXN_HALF_DUPLEX_DISCRETE = 0,
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/**< separate MISO and MOSI, but only either MISO or MOSI has data at
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* one time... i2c style in SPI */
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};
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typedef struct lws_spi_desc {
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const uint8_t *src;
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const uint8_t *data;
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uint8_t *dest;
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void *opaque;
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lws_spi_cb_t completion_cb;
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uint16_t count_cmd;
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uint16_t count_write;
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uint16_t count_read;
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uint8_t txn_type;
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uint8_t channel;
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} lws_spi_desc_t;
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typedef struct lws_spi_ops {
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int (*init)(const struct lws_spi_ops *ctx);
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int (*queue)(const struct lws_spi_ops *ctx, const lws_spi_desc_t *desc);
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uint8_t bus_mode;
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} lws_spi_ops_t;
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#endif
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