Renesas
The sound input from a microphone is output from a speaker. Check device : BSHSAU01BK
Dependencies: USBHostDac USBHost_custom_Addiso
Revision 0:48a46b0d0cdd, committed 2015-09-30
- Comitter:
- dkato
- Date:
- Wed Sep 30 07:18:44 2015 +0000
- Child:
- 1:6f8a2257cc18
- Commit message:
- first commit
Changed in this revision
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/USBHostDac.lib Wed Sep 30 07:18:44 2015 +0000 @@ -0,0 +1,1 @@ +http://developer.mbed.org/teams/Renesas/code/USBHostDac/#4afe26b3d48b
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/USBHost_AddIso.lib Wed Sep 30 07:18:44 2015 +0000 @@ -0,0 +1,1 @@ +http://developer.mbed.org/teams/Renesas/code/USBHost_AddIso/#271fcfd7cfc2
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Wed Sep 30 07:18:44 2015 +0000
@@ -0,0 +1,88 @@
+#include "mbed.h"
+#include "USBHostDac.h"
+
+#if defined(TARGET_RZ_A1H)
+#include "usb_host_setting.h"
+#else
+#define USB_HOST_CH 0
+#endif
+
+#if (USB_HOST_CH == 1) //Audio Shield USB1
+DigitalOut usb1en(P3_8);
+#endif
+DigitalIn button(USER_BUTTON0);
+
+#define AUDIO_READ_BUFF_SIZE (2048)
+#define AUDIO_WRITE_BUFF_SIZE (AUDIO_READ_BUFF_SIZE * 2)
+
+#define AUDIO_WRITE_BUFF_NUM (2)
+
+static uint16_t audio_read_buff[AUDIO_READ_BUFF_SIZE/2];
+static uint16_t audio_write_buff[AUDIO_WRITE_BUFF_NUM][AUDIO_WRITE_BUFF_SIZE/2];
+
+Semaphore sem(0);
+
+void test_task(void const* arg) {
+ int buf_index = 0;
+ USBHostDac * p_usbdac = (USBHostDac *)arg;
+
+ while (1) {
+ sem.wait();
+
+ p_usbdac->send((uint8_t *)audio_write_buff[buf_index], AUDIO_WRITE_BUFF_SIZE, false);
+
+ buf_index++;
+ if (buf_index >= AUDIO_WRITE_BUFF_NUM) {
+ buf_index = 0;
+ }
+ }
+}
+
+int main() {
+ int buf_index = 0;
+
+#if (USB_HOST_CH == 1) //Audio Shield USB1
+ //Audio Shield USB1 enable
+ usb1en = 1; //Outputs high level
+ Thread::wait(5);
+ usb1en = 0; //Outputs low level
+#endif
+
+ USBHostDac usbdac;
+ Thread TestTask(test_task, &usbdac, osPriorityNormal, 1024 * 8);
+
+ while(1) {
+ // try to connect a usbdac device
+ while(!usbdac.connect()) {
+ Thread::wait(500);
+ }
+
+ while (1) {
+ // if device disconnected, try to connect again
+ if (!usbdac.connected()) {
+ break;
+ }
+ int ret = usbdac.receive((uint8_t *)audio_read_buff, AUDIO_READ_BUFF_SIZE);
+ if (ret > 0) {
+ //1ch -> 2ch
+ uint16_t * p_write = audio_write_buff[buf_index];
+ uint16_t * p_read = audio_read_buff;
+
+ for (int cnt = 0; cnt < (ret / 2); cnt++) {
+ *p_write = *p_read;
+ p_write++;
+ *p_write = *p_read;
+ p_write++;
+ p_read++;
+ }
+
+ sem.release();
+
+ buf_index++;
+ if (buf_index >= AUDIO_WRITE_BUFF_NUM) {
+ buf_index = 0;
+ }
+ }
+ }
+ }
+}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed.bld Wed Sep 30 07:18:44 2015 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/mbed_official/code/mbed/builds/4f6c30876dfa \ No newline at end of file