91 lines
1.8 KiB
C
91 lines
1.8 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.org/license.html
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*/
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/**
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* @file drivers/ginput/touch/ADS7843/ginput_lld_mouse_board_olimex_stm32_e407.h
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* @brief GINPUT Touch low level driver source for the ADS7843 on an Olimex STM32E407.
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*
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* @defgroup Mouse Mouse
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* @ingroup GINPUT
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* @{
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*/
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#ifndef _GINPUT_LLD_MOUSE_BOARD_H
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#define _GINPUT_LLD_MOUSE_BOARD_H
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static const SPIConfig spicfg = {
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NULL,
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GPIOC,
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4,
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/* SPI_CR1_BR_2 |*/ SPI_CR1_BR_1 | SPI_CR1_BR_0,
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};
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/**
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* @brief Initialise the board for the touch.
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*
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* @notapi
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*/
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static inline void init_board(void) {
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spiStart(&SPID2, &spicfg);
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}
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/**
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* @brief Check whether the surface is currently touched
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* @return TRUE if the surface is currently touched
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*
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* @notapi
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*/
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static inline bool_t getpin_pressed(void) {
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return (!palReadPad(GPIOC, 5));
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}
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/**
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* @brief Aquire the bus ready for readings
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*
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* @notapi
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*/
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static inline void aquire_bus(void) {
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spiAcquireBus(&SPID2);
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//TOUCHSCREEN_SPI_PROLOGUE();
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palClearPad(GPIOC, 4);
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}
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/**
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* @brief Release the bus after readings
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*
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* @notapi
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*/
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static inline void release_bus(void) {
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palSetPad(GPIOC, 4);
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spiReleaseBus(&SPID2);
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//TOUCHSCREEN_SPI_EPILOGUE();
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}
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/**
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* @brief Read a value from touch controller
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* @return The value read from the controller
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*
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* params[in] port The controller port to read.
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*
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* @notapi
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*/
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static inline uint16_t read_value(uint16_t port) {
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static uint8_t txbuf[3] = {0};
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static uint8_t rxbuf[3] = {0};
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uint16_t ret;
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txbuf[0] = port;
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spiExchange(&SPID2, 3, txbuf, rxbuf);
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ret = (rxbuf[1] << 5) | (rxbuf[2] >> 3);
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return ret;
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}
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#endif /* _GINPUT_LLD_MOUSE_BOARD_H */
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/** @} */
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