Revision 0:78e37c7585e6, committed 2019-11-07

Comitter:

Jerome Coutant

Date:

Thu Nov 07 11:33:58 2019 +0100

Commit message:

First commit

Changed in this revision

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/.hgignore	Thu Nov 07 11:33:58 2019 +0100
@@ -0,0 +1,2 @@
+BUILD
+mbed-os/

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/BSP_DISCO_H747I.lib	Thu Nov 07 11:33:58 2019 +0100
@@ -0,0 +1,1 @@
+https://os.mbed.com/teams/ST/code/BSP_DISCO_H747I/#bc403474b366

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/TOOLCHAIN_ARM_STD/stm32h747xI.sct	Thu Nov 07 11:33:58 2019 +0100
@@ -0,0 +1,57 @@
+#! armcc -E
+; Scatter-Loading Description File
+;******************************************************************************
+;* @attention
+;*
+;* Copyright (c) 2018-2019 STMicroelectronics.
+;* All rights reserved.
+;*
+;* This software component is licensed by ST under BSD 3-Clause license,
+;* the "License"; You may not use this file except in compliance with the
+;* License. You may obtain a copy of the License at:
+;*                        opensource.org/licenses/BSD-3-Clause
+;*
+;******************************************************************************
+
+#if !defined(MBED_APP_START)
+  #define MBED_APP_START 0x08000000
+#endif
+
+#if !defined(MBED_APP_SIZE)
+  #define MBED_APP_SIZE 0x100000
+#endif
+
+#if !defined(MBED_BOOT_STACK_SIZE)
+  #define MBED_BOOT_STACK_SIZE 0x400
+#endif
+
+#define Stack_Size MBED_BOOT_STACK_SIZE
+
+#define MBED_RAM_START              0x24000000
+#define MBED_RAM_SIZE               0x80000
+#define MBED_VECTTABLE_RAM_START    0x20000000
+#define MBED_VECTTABLE_RAM_SIZE     0x298
+#define MBED_RAM0_START             (MBED_RAM_START)
+#define MBED_RAM0_SIZE              (MBED_RAM_SIZE)
+
+LR_IROM1 MBED_APP_START MBED_APP_SIZE  {    ; load region size_region
+
+  ER_IROM1 MBED_APP_START MBED_APP_SIZE  {  ; load address = execution address
+   *.o (RESET, +First)
+   *(InRoot$$Sections)
+   .ANY (+RO)
+  }
+  
+  RW_IRAM1 (MBED_RAM0_START) (MBED_RAM0_SIZE-Stack_Size)  {  ; RW data
+   .ANY (+RW +ZI)
+  }
+
+  ARM_LIB_STACK (MBED_RAM0_START+MBED_RAM0_SIZE) EMPTY -Stack_Size { ; stack
+  }
+
+
+  RW_IRAM2 0x38000000 0x00010000  {  ; RW data
+   *(.RAM_D3)
+  }
+
+}

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/TOOLCHAIN_GCC_ARM/STM32H747xI.ld	Thu Nov 07 11:33:58 2019 +0100
@@ -0,0 +1,192 @@
+/* Linker script to configure memory regions. */
+/*******************************************************************************
+ * @attention
+ *
+ * Copyright (c) 2018-2019 STMicroelectronics.
+ * All rights reserved.
+ *
+ * This software component is licensed by ST under BSD 3-Clause license,
+ * the "License"; You may not use this file except in compliance with the
+ * License. You may obtain a copy of the License at:
+ *                        opensource.org/licenses/BSD-3-Clause
+ *
+ ******************************************************************************
+ */
+
+#if !defined(MBED_APP_START)
+  #define MBED_APP_START 0x08000000
+#endif
+
+#if !defined(MBED_APP_SIZE)
+  #define MBED_APP_SIZE 1024K
+#endif
+
+#if !defined(MBED_BOOT_STACK_SIZE)
+    #define MBED_BOOT_STACK_SIZE 0x400
+#endif
+
+STACK_SIZE = MBED_BOOT_STACK_SIZE;
+
+MEMORY
+{ 
+  FLASH (rx)     : ORIGIN = MBED_APP_START, LENGTH = MBED_APP_SIZE
+  DTCMRAM (rwx)  : ORIGIN = 0x20000298, LENGTH = 128K-0x298
+  RAM (xrw)      : ORIGIN = 0x24000000, LENGTH = 512K
+  RAM_D2 (xrw)   : ORIGIN = 0x30000000, LENGTH = 288K
+  RAM_D3 (xrw)   : ORIGIN = 0x38000000, LENGTH = 64K
+  ITCMRAM (xrw)  : ORIGIN = 0x00000000, LENGTH = 64K
+}
+
+/* Linker script to place sections and symbol values. Should be used together
+ * with other linker script that defines memory regions FLASH and RAM.
+ * It references following symbols, which must be defined in code:
+ *   Reset_Handler : Entry of reset handler
+ * 
+ * It defines following symbols, which code can use without definition:
+ *   __exidx_start
+ *   __exidx_end
+ *   __etext
+ *   __data_start__
+ *   __preinit_array_start
+ *   __preinit_array_end
+ *   __init_array_start
+ *   __init_array_end
+ *   __fini_array_start
+ *   __fini_array_end
+ *   __data_end__
+ *   __bss_start__
+ *   __bss_end__
+ *   __end__
+ *   end
+ *   __HeapLimit
+ *   __StackLimit
+ *   __StackTop
+ *   __stack
+ *   _estack
+ */
+ENTRY(Reset_Handler)
+
+SECTIONS
+{
+    .text :
+    {
+        KEEP(*(.isr_vector))
+        *(.text*)
+        KEEP(*(.init))
+        KEEP(*(.fini))
+
+        /* .ctors */
+        *crtbegin.o(.ctors)
+        *crtbegin?.o(.ctors)
+        *(EXCLUDE_FILE(*crtend?.o *crtend.o) .ctors)
+        *(SORT(.ctors.*))
+        *(.ctors)
+
+        /* .dtors */
+        *crtbegin.o(.dtors)
+        *crtbegin?.o(.dtors)
+        *(EXCLUDE_FILE(*crtend?.o *crtend.o) .dtors)
+        *(SORT(.dtors.*))
+        *(.dtors)
+
+        *(.rodata*)
+
+        KEEP(*(.eh_frame*))
+    } > FLASH
+
+    .ARM.extab :
+    {
+        *(.ARM.extab* .gnu.linkonce.armextab.*)
+    } > FLASH
+
+    __exidx_start = .;
+    .ARM.exidx :
+    {
+        *(.ARM.exidx* .gnu.linkonce.armexidx.*)
+    } > FLASH
+    __exidx_end = .;
+
+    __etext = .;
+    _sidata = .;
+    
+    .data : AT (__etext)
+    {
+        __data_start__ = .;
+        _sdata = .;
+        *(vtable)
+        *(.data*)
+
+        . = ALIGN(8);
+        /* preinit data */
+        PROVIDE_HIDDEN (__preinit_array_start = .);
+        KEEP(*(.preinit_array))
+        PROVIDE_HIDDEN (__preinit_array_end = .);
+
+        . = ALIGN(8);
+        /* init data */
+        PROVIDE_HIDDEN (__init_array_start = .);
+        KEEP(*(SORT(.init_array.*)))
+        KEEP(*(.init_array))
+        PROVIDE_HIDDEN (__init_array_end = .);
+
+
+        . = ALIGN(8);
+        /* finit data */
+        PROVIDE_HIDDEN (__fini_array_start = .);
+        KEEP(*(SORT(.fini_array.*)))
+        KEEP(*(.fini_array))
+        PROVIDE_HIDDEN (__fini_array_end = .);
+
+        KEEP(*(.jcr*))
+        . = ALIGN(8);
+        /* All data end */
+        __data_end__ = .;
+        _edata = .;
+
+    } > RAM
+
+    .bss :
+    {
+        . = ALIGN(8);
+        __bss_start__ = .;
+        _sbss = .;
+        *(.bss*)
+        *(COMMON)
+        . = ALIGN(8);
+        __bss_end__ = .;
+        _ebss = .;
+    } > RAM
+
+    .heap (COPY):
+    {
+        __end__ = .;
+        end = __end__;
+        *(.heap*)
+        . = ORIGIN(RAM) + LENGTH(RAM) - STACK_SIZE;
+        __HeapLimit = .;
+    } > RAM
+
+
+    /* .stack_dummy section doesn't contains any symbols. It is only
+     * used for linker to calculate size of stack sections, and assign
+     * values to stack symbols later */
+    .stack_dummy (COPY):
+    {
+        *(.stack*)
+    } > RAM
+
+    /* Set stack top to end of RAM, and stack limit move down by
+     * size of stack_dummy section */
+    __StackTop = ORIGIN(RAM) + LENGTH(RAM);
+    _estack = __StackTop;
+    __StackLimit = __StackTop - STACK_SIZE;
+    PROVIDE(__stack = __StackTop);
+
+    /* Check if data + heap + stack exceeds RAM limit */
+    ASSERT(__StackLimit >= __HeapLimit, "region RAM overflowed with stack")
+
+    .RAM_D3 (NOLOAD):
+    {
+        *(.RAM_D3)
+    } >RAM_D3
+}

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Thu Nov 07 11:33:58 2019 +0100
@@ -0,0 +1,150 @@
+#include "mbed.h"
+#include "stm32h747i_discovery.h"
+#include "stm32h747i_discovery_audio.h"
+
+extern "C" {
+
+    /* Audio frequency */
+#define AUDIO_FREQUENCY            BSP_AUDIO_FREQUENCY_16K
+#define AUDIO_IN_PDM_BUFFER_SIZE  (uint32_t)(128*AUDIO_FREQUENCY/16000*DEFAULT_AUDIO_IN_CHANNEL_NBR)
+
+    /* Size of the recorder buffer */
+#define RECORD_BUFFER_SIZE        4096
+
+    /* Define record Buf at D3SRAM @0x38000000 since the BDMA for SAI4 use only this memory */
+#if defined (TOOLCHAIN_IAR)  /* IAR */
+    /* No need to update linker script */
+#pragma location=0x38000000
+    uint16_t recordPDMBuf[AUDIO_IN_PDM_BUFFER_SIZE];
+#else  /* GCC_ARM and ARM */
+    /* Linker scripts need to be updated to add RAM_D3 section */
+    ALIGN_32BYTES(uint16_t recordPDMBuf[AUDIO_IN_PDM_BUFFER_SIZE]) __attribute__((section(".RAM_D3")));
+#endif
+
+    uint16_t playbackBuf[RECORD_BUFFER_SIZE * 2];
+
+    /* Pointer to record_data */
+    uint32_t playbackPtr;
+
+    extern SAI_HandleTypeDef haudio_out_sai;
+    extern SAI_HandleTypeDef haudio_in_sai;
+
+
+    /**
+      * @brief  This function handles DMA2 Stream 1 interrupt request.
+      * @param  None
+      * @retval None
+      */
+    void AUDIO_OUT_SAIx_DMAx_IRQHandler(void)
+    /* DMA2_Stream1_IRQHandler redefinition in BSP_DISCO_H747I/STM32H747I-Discovery/stm32h747i_discovery_audio.h */
+    {
+        HAL_DMA_IRQHandler(haudio_out_sai.hdmatx);
+    }
+
+
+    /**
+      * @brief  This function handles BDMA Channel 1 for SAI_PDM interrupt request.
+      * @param  None
+      * @retval None
+      */
+    void AUDIO_IN_SAI_PDMx_DMAx_IRQHandler(void)
+    /* BDMA_Channel1_IRQHandler redefinition in BSP_DISCO_H747I/STM32H747I-Discovery/stm32h747i_discovery_audio.h */
+    {
+        HAL_DMA_IRQHandler(haudio_in_sai.hdmarx);
+    }
+
+
+    /**
+      * @brief Calculates the remaining file size and new position of the pointer.
+      * @param  None
+      * @retval None
+      */
+    void BSP_AUDIO_IN_TransferComplete_CallBack(void)
+    /* weak empty function in BSP_DISCO_H747I/STM32H747I-Discovery/stm32h747i_discovery_audio.c */
+    {
+        if (BSP_AUDIO_IN_GetInterface() == AUDIO_IN_INTERFACE_PDM) {
+            /* Invalidate Data Cache to get the updated content of the SRAM*/
+            SCB_InvalidateDCache_by_Addr((uint32_t *)&recordPDMBuf[AUDIO_IN_PDM_BUFFER_SIZE / 2], AUDIO_IN_PDM_BUFFER_SIZE * 2);
+
+            BSP_AUDIO_IN_PDMToPCM((uint16_t *)&recordPDMBuf[AUDIO_IN_PDM_BUFFER_SIZE / 2], &playbackBuf[playbackPtr]);
+
+            /* Clean Data Cache to update the content of the SRAM */
+            SCB_CleanDCache_by_Addr((uint32_t *)&playbackBuf[playbackPtr], AUDIO_IN_PDM_BUFFER_SIZE / 4);
+
+            playbackPtr += AUDIO_IN_PDM_BUFFER_SIZE / 4 / 2;
+            if (playbackPtr >= RECORD_BUFFER_SIZE) {
+                playbackPtr = 0;
+            }
+        }
+    }
+
+
+    /**
+      * @brief  Manages the DMA Half Transfer complete interrupt.
+      * @param  None
+      * @retval None
+      */
+    void BSP_AUDIO_IN_HalfTransfer_CallBack(void)
+    /* weak empty function in BSP_DISCO_H747I/STM32H747I-Discovery/stm32h747i_discovery_audio.c */
+    {
+        if (BSP_AUDIO_IN_GetInterface() == AUDIO_IN_INTERFACE_PDM) {
+            /* Invalidate Data Cache to get the updated content of the SRAM*/
+            SCB_InvalidateDCache_by_Addr((uint32_t *)&recordPDMBuf[0], AUDIO_IN_PDM_BUFFER_SIZE * 2);
+
+            BSP_AUDIO_IN_PDMToPCM((uint16_t *)&recordPDMBuf[0], &playbackBuf[playbackPtr]);
+
+            /* Clean Data Cache to update the content of the SRAM */
+            SCB_CleanDCache_by_Addr((uint32_t *)&playbackBuf[playbackPtr], AUDIO_IN_PDM_BUFFER_SIZE / 4);
+
+            playbackPtr += AUDIO_IN_PDM_BUFFER_SIZE / 4 / 2;
+            if (playbackPtr >= RECORD_BUFFER_SIZE) {
+                playbackPtr = 0;
+            }
+        }
+    }
+
+
+    /**
+      * @brief  Audio IN Error callback function
+      * @param  None
+      * @retval None
+      */
+    void BSP_AUDIO_IN_Error_CallBack(void)
+    /* weak empty function in BSP_DISCO_H747I/STM32H747I-Discovery/stm32h747i_discovery_audio.c */
+    {
+        MBED_ASSERT(0);
+    }
+
+} // extern C
+
+
+int main()
+{
+    printf("\n\nAUDIO LOOPBACK EXAMPLE WITH AUDIO PDM FOR DISCO-H747I\n");
+
+    /* Set audio input interface */
+    BSP_AUDIO_IN_SelectInterface(AUDIO_IN_INTERFACE_PDM);
+
+    /* Initialize audio IN at REC_FREQ*/
+    if (BSP_AUDIO_IN_InitEx(INPUT_DEVICE_DIGITAL_MIC, AUDIO_FREQUENCY, DEFAULT_AUDIO_IN_BIT_RESOLUTION, DEFAULT_AUDIO_IN_CHANNEL_NBR) != AUDIO_OK) {
+        /* Record Error */
+        MBED_ASSERT(0);
+    }
+
+    /* Initialize audio OUT at REC_FREQ*/
+    if (BSP_AUDIO_OUT_Init(OUTPUT_DEVICE_HEADPHONE, 50, AUDIO_FREQUENCY) != AUDIO_OK) {
+        /* Record Error */
+        MBED_ASSERT(0);
+    }
+
+    /* Set audio slot */
+    BSP_AUDIO_OUT_SetAudioFrameSlot(CODEC_AUDIOFRAME_SLOT_02);
+
+    /* Start the record */
+    BSP_AUDIO_IN_Record((uint16_t *)recordPDMBuf, AUDIO_IN_PDM_BUFFER_SIZE);
+
+    wait_us(1000); // 1 ms
+
+    /* Start audio output */
+    BSP_AUDIO_OUT_Play((uint16_t *)playbackBuf, RECORD_BUFFER_SIZE * 2);
+}

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed-os.lib	Thu Nov 07 11:33:58 2019 +0100
@@ -0,0 +1,1 @@
+https://github.com/ARMmbed/mbed-os/#3254ec3caea751f05025569c2a16246940875def