forked from PAWPAW-Mirror/lib_xua
48 lines
1.5 KiB
Plaintext
48 lines
1.5 KiB
Plaintext
// Copyright 2017-2024 XMOS LIMITED.
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// This Software is subject to the terms of the XMOS Public Licence: Version 1.
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#include <xs1.h>
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#include <platform.h>
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#include "xua.h"
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on tile[0]: out port p_ctrl = XS1_PORT_8D; /* p_ctrl:
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* [0:3] - Unused
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* [4] - EN_3v3_N (1v0 hardware only)
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* [5] - EN_3v3A
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* [6] - EXT_PLL_SEL (CS2100:0, SI: 1)
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* [7] - MCLK_DIR (Out:0, In: 1)
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*/
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#define USE_FRACTIONAL_N (0)
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#if (USE_FRACTIONAL_N)
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#define EXT_PLL_SEL__MCLK_DIR (0x00)
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#else
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#define EXT_PLL_SEL__MCLK_DIR (0x80)
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#endif
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/* Board setup for XU316 MC Audio (1v1) */
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void board_setup()
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{
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/* "Drive high mode" - drive high for 1, non-driving for 0 */
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set_port_drive_high(p_ctrl);
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/* Drive control port to turn on 3V3 and mclk direction appropriately.
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* Bits set to low will be high-z, pulled down */
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p_ctrl <: EXT_PLL_SEL__MCLK_DIR | 0x20;
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/* Wait for power supplies to be up and stable */
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delay_milliseconds(10);
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}
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/* Configures the external audio hardware at startup. Note this runs on Tile[1] */
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void AudioHwInit()
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{
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}
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/* Configures the external audio hardware for the required sample frequency */
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void AudioHwConfig(unsigned samFreq, unsigned mClk, unsigned dsdMode, unsigned sampRes_DAC, unsigned sampRes_ADC)
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{
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}
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