98 lines
2.4 KiB
C
98 lines
2.4 KiB
C
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/*
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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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#ifndef GAUDIO_PLAY_BOARD_H
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#define GAUDIO_PLAY_BOARD_H
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#define SET_CS palSetPad(GPIOC, GPIOC_MP3_CS)
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#define CLR_CS palClearPad(GPIOC, GPIOC_MP3_CS)
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#define SET_RST palSetPad(GPIOC, GPIOC_MP3_RST)
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#define CLR_RST palClearPad(GPIOC, GPIOC_MP3_RST)
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#define SET_DCS palSetPad(GPIOC, GPIOC_MP3_DCS)
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#define CLR_DCS palClearPad(GPIOC, GPIOC_MP3_DCS)
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#define GET_DREQ palReadPad(GPIOC, GPIOC_MP3_DREQ)
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#define SPI_PORT &SPID3
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static const SPIConfig spicfg_init = {
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0,
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GPIOC,
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GPIOC_MP3_CS,
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SPI_CR1_BR_2 | SPI_CR1_BR_1 | SPI_CR1_BR_0,
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};
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static const SPIConfig spicfg = {
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0,
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GPIOC,
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GPIOC_MP3_CS,
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SPI_CR1_BR_0,
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};
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// Initialise the board
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static GFXINLINE void board_init(void) {
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palSetPadMode(GPIOC, GPIOC_MP3_CS, PAL_MODE_OUTPUT_PUSHPULL);
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palSetPadMode(GPIOC, GPIOC_MP3_RST, PAL_MODE_OUTPUT_PUSHPULL);
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palSetPadMode(GPIOC, GPIOC_MP3_DCS, PAL_MODE_OUTPUT_PUSHPULL);
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palSetPadMode(GPIOC, GPIOC_MP3_DREQ, PAL_MODE_INPUT);
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SET_CS; SET_RST; SET_DCS;
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spiStart(SPI_PORT, &spicfg_init);
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}
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// Chip is initialised enough so we can talk fast to it
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#define board_init_end() spiStart(SPI_PORT, &spicfg)
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// Reset the board
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#define board_reset() { CLR_RST; gfxSleepMilliseconds(1); SET_RST; }
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// Returns the state of the dreq pin
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#define board_dreq() GET_DREQ
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// Start a command write
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static GFXINLINE void board_startcmdwrite(void) {
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#if SPI_USE_MUTUAL_EXCLUSION
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spiAcquireBus(SPI_PORT);
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#endif
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CLR_CS;
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}
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// End a command write
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static GFXINLINE void board_endcmdwrite(void) {
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SET_CS;
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#if SPI_USE_MUTUAL_EXCLUSION
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spiReleaseBus(SPI_PORT);
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#endif
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}
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// Start a command read
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#define board_startcmdread() board_startcmdwrite()
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// End a command read
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#define board_endcmdread() board_endcmdwrite()
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// Start a data write
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static GFXINLINE void board_startdatawrite(void) {
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#if SPI_USE_MUTUAL_EXCLUSION
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spiAcquireBus(SPI_PORT);
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#endif
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CLR_DCS;
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}
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// End a data write
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static GFXINLINE void board_enddatawrite(void) {
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#if SPI_USE_MUTUAL_EXCLUSION
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spiReleaseBus(SPI_PORT);
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#endif
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SET_DCS;
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}
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// Write data to the SPI port
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#define board_spiwrite(buf, len) spiSend(SPI_PORT, len, buf)
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// Read data from the SPI port
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#define board_spiread(buf, len) spiReceive(SPI_PORT, len, buf)
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#endif /* GAUDIO_PLAY_BOARD_H */
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