Add PDM2PCM library.

This commit is contained in:
iabdalkader 2020-10-24 22:52:02 +02:00
parent ae9d844e2e
commit cac07dcaa2
3 changed files with 100 additions and 0 deletions

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@ -58,6 +58,7 @@ WINC1500_DIR=winc1500
BOOTLDR_DIR=bootloader
UVC_DIR=uvc
CUBEAI_DIR=stm32cubeai
LIBPDM_DIR=libpdm
OMV_BOARD_CONFIG_DIR=$(TOP_DIR)/$(OMV_DIR)/boards/$(TARGET)/
MP_BOARD_CONFIG_DIR=$(TOP_DIR)/$(MICROPY_DIR)/ports/stm32/boards/$(TARGET)/
@ -155,6 +156,7 @@ OMV_CFLAGS += -I$(TOP_DIR)/$(MLX_DIR)/include/
OMV_CFLAGS += -I$(TOP_DIR)/$(ST_DIR)/include/
OMV_CFLAGS += -I$(TOP_DIR)/$(TENSORFLOW_DIR)/$(CPU)/
OMV_CFLAGS += -I$(TOP_DIR)/$(WINC1500_DIR)/include/
OMV_CFLAGS += -I$(TOP_DIR)/$(LIBPDM_DIR)/
UVC_CFLAGS = $(CFLAGS)
UVC_CFLAGS += -I$(OMV_BOARD_CONFIG_DIR)
@ -184,6 +186,7 @@ UVC_LDFLAGS = -mcpu=$(CPU) -mabi=aapcs-linux -mthumb -mfpu=$(FPU) -mfloat-abi=ha
#------------- Libraries ----------------#
LIBS = -lgcc
LIBS += $(TOP_DIR)/$(LIBPDM_DIR)/libPDMFilter_CM7_GCC_wc32.a
FIRM_OBJ += $(wildcard $(BUILD)/$(CMSIS_DIR)/src/dsp/CommonTables/*.o)
FIRM_OBJ += $(wildcard $(BUILD)/$(CMSIS_DIR)/src/dsp/FastMathFunctions/*.o)
FIRM_OBJ += $(wildcard $(BUILD)/$(CMSIS_DIR)/src/dsp/MatrixFunctions/*.o)

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97
src/libpdm/pdm2pcm_glo.h Normal file
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@ -0,0 +1,97 @@
/**
******************************************************************************
* @file pdm2pcm_glo.h
* @author MCD Application Team
* @version V3.0.0
* @date 28-February-2017
* @brief Global header for PDM2PCM conversion code
******************************************************************************
* @attention
*
* <h2><center>&copy; COPYRIGHT 2011 STMicroelectronics</center></h2>
*
* Licensed under MCD-ST Image SW License Agreement V2, (the "License");
* You may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.st.com/software_license_agreement_image_v2
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*
******************************************************************************
*/
/* Define to prevent recursive inclusion -------------------------------------*/
#ifndef __PDM2PCM_FILTER_H
#define __PDM2PCM_FILTER_H
#ifdef __cplusplus
extern "C" {
#endif
/* Includes ------------------------------------------------------------------*/
#include <stdint.h>
/* Exported constants --------------------------------------------------------*/
#define PDM_FILTER_ENDIANNESS_LE ((uint16_t)0x0000)
#define PDM_FILTER_ENDIANNESS_BE ((uint16_t)0x0001)
#define PDM_FILTER_BIT_ORDER_LSB ((uint16_t)0x0000)
#define PDM_FILTER_BIT_ORDER_MSB ((uint16_t)0x0001)
#define PDM_FILTER_DEC_FACTOR_48 ((uint16_t)0x0001)
#define PDM_FILTER_DEC_FACTOR_64 ((uint16_t)0x0002)
#define PDM_FILTER_DEC_FACTOR_80 ((uint16_t)0x0003)
#define PDM_FILTER_DEC_FACTOR_128 ((uint16_t)0x0004)
#define PDM_FILTER_DEC_FACTOR_16 ((uint16_t)0x0005)
#define PDM_FILTER_DEC_FACTOR_24 ((uint16_t)0x0006)
#define PDM_FILTER_DEC_FACTOR_32 ((uint16_t)0x0007)
#define PDM_FILTER_INIT_ERROR ((uint16_t)0x0010)
#define PDM_FILTER_CONFIG_ERROR ((uint16_t)0x0020)
#define PDM_FILTER_ENDIANNESS_ERROR ((uint16_t)0x0001)
#define PDM_FILTER_BIT_ORDER_ERROR ((uint16_t)0x0002)
#define PDM_FILTER_CRC_LOCK_ERROR ((uint16_t)0x0004)
#define PDM_FILTER_DECIMATION_ERROR ((uint16_t)0x0008)
#define PDM_FILTER_GAIN_ERROR ((uint16_t)0x0040)
#define PDM_FILTER_SAMPLES_NUMBER_ERROR ((uint16_t)0x0080)
#define PDM2PCM_INTERNAL_MEMORY_SIZE 16
/* Exported types ------------------------------------------------------------*/
typedef struct{
uint16_t bit_order;
uint16_t endianness;
uint32_t high_pass_tap;
uint16_t in_ptr_channels;
uint16_t out_ptr_channels;
uint32_t pInternalMemory[PDM2PCM_INTERNAL_MEMORY_SIZE];
}PDM_Filter_Handler_t;
typedef struct{
uint16_t decimation_factor;
uint16_t output_samples_number;
int16_t mic_gain;
}PDM_Filter_Config_t;
/* Exported macros -----------------------------------------------------------*/
/* Exported functions ------------------------------------------------------- */
uint32_t PDM_Filter_Init(PDM_Filter_Handler_t *pHandler);
uint32_t PDM_Filter_setConfig(PDM_Filter_Handler_t *pHandler, PDM_Filter_Config_t *pConfig);
uint32_t PDM_Filter_getConfig(PDM_Filter_Handler_t *pHandler, PDM_Filter_Config_t *pConfig);
uint32_t PDM_Filter_deInterleave(void *pDataIn, void *pDataOut, PDM_Filter_Handler_t * pHandler);
uint32_t PDM_Filter(void *pDataIn, void *pDataOut, PDM_Filter_Handler_t *pHandler);
#ifdef __cplusplus
}
#endif
#endif /* __PDM2PCM_FILTER_H */
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/