1f6cb8f047
This commit adds support for machine.I2S on the mimxrt port. The I2S API is consistent with the existing stm32, esp32, and rp2 implementations. I2S features: - controller transmit and controller receive - 16-bit and 32-bit sample sizes - mono and stereo formats - sampling frequencies from 8kHz to 48kHz - 3 modes of operation: - blocking - non-blocking with callback - uasyncio - configurable internal buffer - optional MCK Tested with the following development boards: - MIMXRT1010_EVK, MIMXRT1015_EVK, MIMXRT1020_EVK, MIMXRT1050_EVK - Teensy 4.0, Teensy 4.1 - Olimex RT1010 - Seeed ARCH MIX Tested with the following I2S hardware peripherals: - UDA1334 - GY-SPH0645LM4H - WM8960 codec on board the MIMXRT boards and separate breakout board - INMP441 - PCM5102 - SGTL5000 on the Teensy audio shield Signed-off-by: Mike Teachman <mike.teachman@gmail.com>
116 lines
3.2 KiB
C
116 lines
3.2 KiB
C
/*
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* This file is part of the MicroPython project, http://micropython.org/
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*
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* Based on tinyusb/hw/bsp/teensy_40/teensy40.c
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*
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* The MIT License (MIT)
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*
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* Copyright (c) 2018, hathach (tinyusb.org)
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* Copyright (c) 2020, Jim Mussared
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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 deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* 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 FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "py/runtime.h"
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#include "tusb.h"
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#include "fsl_device_registers.h"
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#include "fsl_gpio.h"
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#include "fsl_iomuxc.h"
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#include "fsl_clock.h"
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#include "fsl_lpuart.h"
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#include "clock_config.h"
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#include "modmachine.h"
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const uint8_t dcd_data[] = { 0x00 };
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void board_init(void) {
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// Init clock
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BOARD_BootClockRUN();
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SystemCoreClockUpdate();
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// Enable IOCON clock
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CLOCK_EnableClock(kCLOCK_Iomuxc);
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// ------------- SDRAM ------------ //
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#ifdef MICROPY_HW_SDRAM_AVAIL
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mimxrt_sdram_init();
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#endif
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// 1ms tick timer
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SysTick_Config(SystemCoreClock / 1000);
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// ------------- USB0 ------------- //
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// Clock
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CLOCK_EnableUsbhs0PhyPllClock(kCLOCK_Usbphy480M, 480000000U);
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CLOCK_EnableUsbhs0Clock(kCLOCK_Usb480M, 480000000U);
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#ifdef USBPHY1
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USBPHY_Type *usb_phy = USBPHY1;
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#else
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USBPHY_Type *usb_phy = USBPHY;
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#endif
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// Enable PHY support for Low speed device + LS via FS Hub
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usb_phy->CTRL |= USBPHY_CTRL_SET_ENUTMILEVEL2_MASK | USBPHY_CTRL_SET_ENUTMILEVEL3_MASK;
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// Enable all power for normal operation
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usb_phy->PWD = 0;
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// TX Timing
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uint32_t phytx = usb_phy->TX;
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phytx &= ~(USBPHY_TX_D_CAL_MASK | USBPHY_TX_TXCAL45DM_MASK | USBPHY_TX_TXCAL45DP_MASK);
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phytx |= USBPHY_TX_D_CAL(0x0C) | USBPHY_TX_TXCAL45DP(0x06) | USBPHY_TX_TXCAL45DM(0x06);
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usb_phy->TX = phytx;
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// USB1
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// CLOCK_EnableUsbhs1PhyPllClock(kCLOCK_Usbphy480M, 480000000U);
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// CLOCK_EnableUsbhs1Clock(kCLOCK_Usb480M, 480000000U);
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// ADC
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machine_adc_init();
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// PIT
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machine_timer_init_PIT();
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// SDCard
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#if MICROPY_PY_MACHINE_SDCARD
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machine_sdcard_init0();
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#endif
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#if MICROPY_PY_MACHINE_I2S
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machine_i2s_init0();
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#endif
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}
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void USB_OTG1_IRQHandler(void) {
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tud_int_handler(0);
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tud_task();
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__SEV();
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}
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void USB_OTG2_IRQHandler(void) {
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tud_int_handler(1);
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tud_task();
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__SEV();
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}
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