パラメータを適応変化させる事により圧縮率を向上させた動的ライス・ゴロム符号を利用した可逆圧縮方式。圧縮ソフト、圧縮率のMATLABシミュレーションは詳細はInterface誌2011年8月号に掲載されるRX62Nマイコン連動特集にて掲載予定。
Diff: I2S_Example/i2s_irq_test.h
- Revision:
- 0:d920d64db582
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/I2S_Example/i2s_irq_test.h Wed Mar 30 06:05:24 2011 +0000 @@ -0,0 +1,55 @@ +#ifndef I2S_IRQ_TEST_H_ +#define I2S_IRQ_TEST_H_ + + +#include "lpc_types.h" +#include "lpc17xx_i2s.h" +#include "lpc17xx_libcfg.h" +#include "lpc17xx_pinsel.h" +//#include "debug_frmwrk.h" +#include "i2s_irq_test.h" + + +/************************** PRIVATE DEFINITIONS *************************/ +/** Max buffer length */ +#define BUFFER_SIZE 0x400 +/** I2S Buffer Source Address is AHBRAM1_BASE that used for USB RAM purpose, but + * it is not used in this example, so this memory section can be used for general purpose + * memory + */ +#define I2S_BUFFER_SRC LPC_AHBRAM1_BASE //0x20080000 +/** I2S Buffer Destination Address is (AHBRAM1_BASE + 0x100UL) that used for USB RAM purpose, but + * it is not used in this example, so this memory section can be used for general purpose + * memory + */ +#define I2S_BUFFER_DST (I2S_BUFFER_SRC+0x1000UL) //0x20081000 + +#define RXFIFO_EMPTY 0 +#define TXFIFO_FULL 8 + +extern "C" void I2S_IRQHandler(void); + + + +extern void Buffer_Init(void); +extern Bool Buffer_Verify(void); +extern void print_menu(void); +extern int c_entry(void); +extern void mbed_i2s_init(void); + + +extern volatile uint8_t I2STXDone; +extern volatile uint8_t I2SRXDone; + +extern volatile uint32_t *I2STXBuffer; +extern volatile uint32_t *I2SRXBuffer; + +extern volatile uint32_t I2SReadLength; +extern volatile uint32_t I2SWriteLength; + +extern uint8_t tx_depth_irq; +extern uint8_t rx_depth_irq; +extern uint8_t dummy; + + +#endif \ No newline at end of file