seiichi horie
First Publish. Works fine.
Dependents: unzen_sample_nucleo_f746 unzen_delay_sample_nucleo_f746 skeleton_unzen_nucleo_f746 ifmag_noise_canceller ... more
Nucleo F746ZG用のオーディオ・フレームワークです。フレームワーク地震の詳細は『雲仙』オーディオ・フレームワークを参照してください。
参考リンク
- skeleton_unzen_nucleo_f746 Nucleo F746ZGおよびUI基板を使う場合のスケルトンプログラム。F746を使う方はここから読み始めると良いでしょう。
Diff: unzen_hal.h
- Revision:
- 0:5ac19c994288
- Child:
- 1:9710fb328a08
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/unzen_hal.h Sun Apr 10 12:37:10 2016 +0000
@@ -0,0 +1,42 @@
+#ifndef _UNZEN_HAL_H_
+#define _UNZEN_HAL_H_
+
+#include "mbed.h"
+
+namespace unzen
+{
+ // Set up I2S peripheral to ready to start.
+ // By this HAL, the I2S have to become :
+ // - slave mode
+ // - clock must be ready
+ // - pins must be configured.
+ // - Interrupt enable.
+ void hal_i2s_setup();
+
+ // Start I2S transfer. Interrupt starts
+ void hal_i2s_start();
+
+ IRQn_Type hal_get_i2s_irq_id();
+ IRQn_Type hal_get_process_irq_id();
+
+ // The returned value must be compatible with CMSIS NVIC_SetPriority() API.
+ unsigned int hal_get_lowest_priority_level();
+
+ // reutun the intenger value which tells how much data have to be transfered for each
+ // interrupt. For example, if the stereo 32bit data ( total 64 bit ) have to be sent,
+ // have to return 2.
+ // The special case is when the word needs to transmit by multiple interrupt,
+ // must return 0.
+ unsigned int hal_data_per_sample();
+
+ // return true when the sample parameter is ready to read.
+ // return false when the sample is not ready to read.
+ bool hal_get_i2s_rx_data( int & sample);
+
+ // return true when the sample was completely stored to send.
+ // return false when the same sample is required next time.
+ bool hal_set_i2s_tx_data( int sample );
+}
+
+
+#endif
\ No newline at end of file