V1.0

2026-06-09 16:39:17 +08:00
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+/*!
+ * \file      pga_adc.h
+ *
+ * \brief     The head file of pga_adc.h
+ *
+ * \copyright Revised BSD License, see section \ref LICENSE.
+ *
+ * \code
+ *
+ *            _  __ _       ________    _
+ *           | |/ /(_)___  / ____/ /_  (_)___
+ *           |   // / __ \/ /   / __ \/ / __ \
+ *          /   |/ / / / / /___/ / / / / /_/ /
+ *         /_/|_/_/_/ /_/\____/_/ /_/_/ .___/
+ *                                   /_/
+ *           (C) 2022-2025 XinChip
+ *
+ * \endcode
+ *
+ * \author     ( XinChip ) Alex-J
+ *
+ * \author     ( XinChip )
+ */
+
+/* Define to prevent recursive inclusion -------------------------------------*/
+#ifndef __BSP_PGA_ADC_H_
+#define __BSP_PGA_ADC_H_
+
+/*-----------------------------------------------------------------------------------
+                                 INCLUDE HEADE FILES
+ ------------------------------------------------------------------------------------*/
+#include "stdint.h"
+#include "xc60xx.h"
+/*------------------------------------------------------------------------------------
+                                       Macros
+ -------------------------------------------------------------------------------------*/
+
+#define SAMPLING_DEBUG 1
+#define REC_TEST_EN 1 //录音测试，定时录音
+
+#define ADC_CLOCK_FREQ_8M ADC_CLK_DIV_0    // ADC_FREQ_8M
+#define ADC_CLOCK_FREQ_4M ADC_CLK_DIV_2    // ADC_FREQ_4M
+#define ADC_CLOCK_FREQ_2M ADC_CLK_DIV_4    // ADC_FREQ_2M
+#define ADC_CLOCK_FREQ_1M ADC_CLK_DIV_8    // ADC_FREQ_1M
+#define ADC_CLOCK_FREQ_500K ADC_CLK_DIV_16 // ADC_FREQ_500K
+
+#define ADC_FREQ_CLOCK ADC_CLK_DIV_4 // ADC时钟选择
+
+#define MIC_SAMPLING_8K 0
+#define MIC_SAMPLING_16K 1
+#define SAMPLING_TYPE MIC_SAMPLING_16K
+
+#define MIC_SAMPLING_MAX_LEN 1 * 256 //缓冲长度,根据需求调节
+
+/*------------------------------------------------------------------------------------
+                                        TypeDef
+ -------------------------------------------------------------------------------------*/
+
+typedef struct {
+  short mic_adc_buff[2][MIC_SAMPLING_MAX_LEN]; //双缓存buff，方便读取以及采样
+  uint16_t pga_adc_rx_index;                   //缓存buff下标
+  uint8_t
+      save_buf_index; //双缓存buff下标，存放第几个mic_adc_buff[save_buf_index][]
+  uint8_t buf_full_flag;
+
+  uint8_t freq_con; //采样率计算
+
+#if SAMPLING_DEBUG
+  uint32_t pga_adc_rx_con;
+  uint8_t rx_flag;
+#endif
+
+#if REC_TEST_EN || SAMPLING_DEBUG
+  uint8_t rec_len_time;
+#endif
+
+} Mic_sampling_cb;
+
+/*------------------------------------------------------------------------------------
+                                      Global Variables
+ -------------------------------------------------------------------------------------*/
+extern Mic_sampling_cb m_sampling_cb;
+
+/*------------------------------------------------------------------------------------
+                                    Exported Functions
+ -------------------------------------------------------------------------------------*/
+void audio_adc_rx_dma_event_handler(void);
+void pga_adc_rx_event_handler(uint16_t pga_adc_val);
+
+#endif