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。
unzen_hal.h
- Committer:
- shorie
- Date:
- 2017-01-29
- Revision:
- 20:e995396b427b
- Parent:
- 2:6613e62da521
File content as of revision 20:e995396b427b:
#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 void hal_i2s_setup(void); // configure the pins of I2S and then, wait for WS. // This waiting is important to avoid the delay between TX and RX. // The HAL API will wait for the WS changes from left to right then return. // The procesure is : // 1. configure WS pin as GPIO // 2. wait the WS rising edge // 3. configure all pins as I2S void hal_i2s_pin_config_and_wait_ws(void); // Start I2S transfer. Interrupt starts void hal_i2s_start(void); // returns the IRQ ID for I2S RX interrupt IRQn_Type hal_get_i2s_irq_id(void); // returns the IRQ ID for process IRQ. Typically, this is allocated to the reserved IRQ. IRQn_Type hal_get_process_irq_id(void); // The returned value must be compatible with CMSIS NVIC_SetPriority() API. That mean, it is integer like 0, 1, 2... unsigned int hal_get_i2s_irq_priority_level(void); // The returned value must be compatible with CMSIS NVIC_SetPriority() API. That mean, it is integer like 0, 1, 2... unsigned int hal_get_process_irq_priority_level(void); // 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. unsigned int hal_data_per_sample(void); // get data from I2S RX peripheral. Where sample is one audio data. Stereo data is constructed by 2 samples. void hal_get_i2s_rx_data( int & sample); // put data into I2S TX peripheral. Where sample is one audio data. Stereo data is constructed by 2 samples. void hal_put_i2s_tx_data( int sample ); } #endif