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rt-thread-official/bsp/stm32/stm32mp157a-st-ev1/board/ports/drv_spdifrx.c

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/*
* Copyright (c) 2006-2021, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2020-07-28 thread-liu the first version
*/
#include "board.h"
#if defined(BSP_USING_SPDIFRX)
#include "drv_spdifrx.h"
#define DRV_DEBUG
#define LOG_TAG "drv.spdifrx"
#include <drv_log.h>
struct stm32_spdifrx
{
struct rt_device dev;
SPDIFRX_HandleTypeDef spdifrx;
SAI_HandleTypeDef sai4;
volatile rt_uint8_t complate;
};
static struct stm32_spdifrx rt_spdifrx = {0};
extern DMA_HandleTypeDef hdma_spdifrx_rx;
extern DMA_HandleTypeDef hdma_sai4_a;
static void sai4a_init(SAI_HandleTypeDef* sai)
{
sai->Instance = SAI4_Block_A;
sai->Init.Protocol = SAI_SPDIF_PROTOCOL;
sai->Init.AudioMode = SAI_MODEMASTER_TX;
sai->Init.Synchro = SAI_ASYNCHRONOUS;
sai->Init.OutputDrive = SAI_OUTPUTDRIVE_DISABLE;
sai->Init.FIFOThreshold = SAI_FIFOTHRESHOLD_EMPTY;
sai->Init.AudioFrequency = SAI_AUDIO_FREQUENCY_96K;
sai->Init.MonoStereoMode = SAI_STEREOMODE;
sai->Init.CompandingMode = SAI_NOCOMPANDING;
sai->Init.PdmInit.Activation = DISABLE;
sai->Init.PdmInit.MicPairsNbr = 0;
sai->Init.PdmInit.ClockEnable = SAI_PDM_CLOCK1_ENABLE;
sai->Init.DataSize = SAI_DATASIZE_24;
sai->Init.FirstBit = SAI_FIRSTBIT_MSB;
sai->Init.ClockStrobing = SAI_CLOCKSTROBING_FALLINGEDGE;
sai->FrameInit.FrameLength = 64;
sai->FrameInit.ActiveFrameLength = 32;
sai->FrameInit.FSDefinition = SAI_FS_STARTFRAME;
sai->FrameInit.FSPolarity = SAI_FS_ACTIVE_LOW;
sai->FrameInit.FSOffset = SAI_FS_FIRSTBIT;
sai->SlotInit.FirstBitOffset = 0;
sai->SlotInit.SlotSize = SAI_SLOTSIZE_DATASIZE;
sai->SlotInit.SlotNumber = 4;
sai->SlotInit.SlotActive = SAI_SLOTACTIVE_ALL;
if (HAL_SAI_Init(sai) != HAL_OK)
{
Error_Handler();
}
}
void DMA1_Stream7_IRQHandler(void)
{
/* enter interrupt */
rt_interrupt_enter();
HAL_DMA_IRQHandler(&hdma_spdifrx_rx);
/* leave interrupt */
rt_interrupt_leave();
}
void DMA1_Stream2_IRQHandler(void)
{
/* enter interrupt */
rt_interrupt_enter();
HAL_DMA_IRQHandler(&hdma_sai4_a);
/* leave interrupt */
rt_interrupt_leave();
}
void HAL_SPDIFRX_RxCpltCallback(SPDIFRX_HandleTypeDef *hspdif)
{
rt_spdifrx.complate = SET;
}
static rt_err_t _init(rt_device_t dev)
{
RT_ASSERT(dev != RT_NULL);
struct stm32_spdifrx *device = (struct stm32_spdifrx *)dev;
device->spdifrx.Instance = SPDIFRX;
HAL_SPDIFRX_DeInit(&device->spdifrx);
device->spdifrx.Init.InputSelection = SPDIFRX_INPUT_IN1;
device->spdifrx.Init.Retries = SPDIFRX_MAXRETRIES_15;
device->spdifrx.Init.WaitForActivity = SPDIFRX_WAITFORACTIVITY_ON;
device->spdifrx.Init.ChannelSelection = SPDIFRX_CHANNEL_A;
device->spdifrx.Init.DataFormat = SPDIFRX_DATAFORMAT_MSB;
device->spdifrx.Init.StereoMode = SPDIFRX_STEREOMODE_ENABLE;
device->spdifrx.Init.PreambleTypeMask = SPDIFRX_PREAMBLETYPEMASK_ON;
device->spdifrx.Init.ChannelStatusMask = SPDIFRX_CHANNELSTATUS_ON;
if (HAL_SPDIFRX_Init(&device->spdifrx) != HAL_OK)
{
return -RT_ERROR;
}
sai4a_init(&device->sai4);
rt_spdifrx.complate = RESET;
return RT_EOK;
}
static rt_err_t _open(rt_device_t dev, rt_uint16_t oflag)
{
RT_ASSERT(dev != RT_NULL);
return RT_EOK;
}
static rt_err_t _close(rt_device_t dev)
{
RT_ASSERT(dev != RT_NULL);
return RT_EOK;
}
static rt_ssize_t _read(rt_device_t dev, rt_off_t pos, void *buffer, rt_size_t size)
{
rt_uint32_t tickstart = 0;
RT_ASSERT(dev != RT_NULL);
struct stm32_spdifrx *device = (struct stm32_spdifrx *)dev;
rt_err_t result = RT_EOK;
result = HAL_SPDIFRX_ReceiveDataFlow_DMA(&device->spdifrx, (uint32_t *)buffer, size);
if (result != HAL_OK)
{
return 0;
}
if(device->spdifrx.ErrorCode != HAL_SPDIFRX_ERROR_NONE)
{
return 0;
}
tickstart = rt_tick_get();
while (rt_spdifrx.complate == RESET)
{
if (rt_tick_get() - tickstart > 0xFFFF)
{
return 0;
}
}
rt_spdifrx.complate = RESET;
return size;
}
static rt_ssize_t _write(rt_device_t dev, rt_off_t pos, const void *buffer, rt_size_t size)
{
RT_ASSERT(dev != RT_NULL);
struct stm32_spdifrx *device = (struct stm32_spdifrx *)dev;
rt_err_t result = RT_EOK;
result = HAL_SAI_Transmit_DMA(&device->sai4, (rt_uint8_t *)buffer, size);
if (result != HAL_OK)
{
return -RT_ERROR;
}
return RT_EOK;
}
static rt_err_t _control(rt_device_t dev, int cmd, void *args)
{
RT_ASSERT(dev != RT_NULL);
return RT_EOK;
}
int spdifrx_init(void)
{
rt_spdifrx.dev.type = RT_Device_Class_Miscellaneous;
rt_spdifrx.dev.init = _init;
rt_spdifrx.dev.open = _open;
rt_spdifrx.dev.close = _close;
rt_spdifrx.dev.read = _read;
rt_spdifrx.dev.write = _write;
rt_spdifrx.dev.control = _control;
rt_spdifrx.dev.user_data = RT_NULL;
rt_device_register(&rt_spdifrx.dev, "spdifrx", RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_REMOVABLE | RT_DEVICE_FLAG_STANDALONE);
rt_device_init(&rt_spdifrx.dev);
LOG_I("spdifrx init success!");
return RT_EOK;
}
INIT_DEVICE_EXPORT(spdifrx_init);
#ifdef FINSH_USING_MSH
#include <finsh.h>
#define __is_print(ch) ((unsigned int)((ch) - ' ') < 127u - ' ')
static void dump_hex(const rt_uint8_t *ptr, rt_size_t buflen)
{
unsigned char *buf = (unsigned char *)ptr;
int i, j;
for (i = 0; i < buflen; i += 16)
{
rt_kprintf("%08X: ", i);
for (j = 0; j < 16; j++)
if (i + j < buflen)
rt_kprintf("%02X ", buf[i + j]);
else
rt_kprintf(" ");
rt_kprintf(" ");
for (j = 0; j < 16; j++)
if (i + j < buflen)
rt_kprintf("%c", __is_print(buf[i + j]) ? buf[i + j] : '.');
rt_kprintf("\n");
}
}
static int spdifrx_sample(int argc, char **argv)
{
extern SAI_HandleTypeDef hsai_block4_a;
if (argc != 1)
{
rt_kprintf("Usage:\n");
rt_kprintf("spdifrx_sample\n");
return -1;
}
/* 16 bit Data Buffer for Transmission */
static rt_uint16_t tx_buffer[64] = {
0x5152, 0x5354, 0x5556, 0x5758, 0x595A, 0x5B5C, 0x5D5E, 0x5F60,
0x6162, 0x6364, 0x6566, 0x6768, 0x696A, 0x6B6C, 0x6D6E, 0x6F70,
0x7172, 0x7374, 0x7576, 0x7778, 0x797A, 0x7B7C, 0x7D7E, 0x7F80,
0x8182, 0x8384, 0x8586, 0x8788, 0x898A, 0x8B8C, 0x8D8E, 0x8F90,
0x5152, 0x5354, 0x5556, 0x5758, 0x595A, 0x5B5C, 0x5D5E, 0x5F60,
0x6162, 0x6364, 0x6566, 0x6768, 0x696A, 0x6B6C, 0x6D6E, 0x6F70,
0x7172, 0x7374, 0x7576, 0x7778, 0x797A, 0x7B7C, 0x7D7E, 0x7F80,
0x8182, 0x8384, 0x8586, 0x8788, 0x898A, 0x8B8C, 0x8D8E, 0x8F90};
static rt_uint32_t *rx_buffer = NULL;
rt_uint8_t size = 64;
struct rt_device *dev = RT_NULL;
dev = rt_device_find("spdifrx");
if (dev == RT_NULL)
{
rt_kprintf("can't find spdifrx device!\n");
}
rt_device_open(dev, RT_DEVICE_OFLAG_RDWR);
rt_kprintf("spdifrx test tx data : \n");
dump_hex((rt_uint8_t *)tx_buffer, size);
rx_buffer = (rt_uint32_t *)rt_malloc(size);
rt_device_write(dev, 0, tx_buffer, size);
rt_device_read(dev, 0, rx_buffer, size);
/* Compare the received data with the expected one */
while (size--)
{
if (((rx_buffer[size] & 0x00ffff00) >> 8) != (tx_buffer[size]))
{
rt_kprintf("spdirex loopback mode test failed!\n");
return -RT_ERROR;
}
}
rt_kprintf("spdifrx rx : \n");
dump_hex((rt_uint8_t *)rx_buffer, size);
rt_kprintf("spdirex loopback mode test success!\n");
return RT_EOK;
}
MSH_CMD_EXPORT(spdifrx_sample, spdifrx loopback test);
#endif
#endif
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