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/system_LPC17xx.c
- Revision:
- 0:d920d64db582
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/I2S_Example/system_LPC17xx.c Wed Mar 30 06:05:24 2011 +0000 @@ -0,0 +1,532 @@ +/**************************************************************************//** + * @file system_LPC17xx.c + * @brief CMSIS Cortex-M3 Device Peripheral Access Layer Source File + * for the NXP LPC17xx Device Series + * @version V1.03 + * @date 07. October 2009 + * + * @note + * Copyright (C) 2009 ARM Limited. All rights reserved. + * + * @par + * ARM Limited (ARM) is supplying this software for use with Cortex-M + * processor based microcontrollers. This file can be freely distributed + * within development tools that are supporting such ARM based processors. + * + * @par + * THIS SOFTWARE IS PROVIDED "AS IS". NO WARRANTIES, WHETHER EXPRESS, IMPLIED + * OR STATUTORY, INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE APPLY TO THIS SOFTWARE. + * ARM SHALL NOT, IN ANY CIRCUMSTANCES, BE LIABLE FOR SPECIAL, INCIDENTAL, OR + * CONSEQUENTIAL DAMAGES, FOR ANY REASON WHATSOEVER. + * + ******************************************************************************/ + + +#include <stdint.h> +#include "LPC17xx.h" + + +/** @addtogroup LPC17xx_System + * @{ + */ + +/* +//-------- <<< Use Configuration Wizard in Context Menu >>> ------------------ +*/ + +/*--------------------- Clock Configuration ---------------------------------- +// +// <e> Clock Configuration +// <h> System Controls and Status Register (SCS) +// <o1.4> OSCRANGE: Main Oscillator Range Select +// <0=> 1 MHz to 20 MHz +// <1=> 15 MHz to 24 MHz +// <e1.5> OSCEN: Main Oscillator Enable +// </e> +// </h> +// +// <h> Clock Source Select Register (CLKSRCSEL) +// <o2.0..1> CLKSRC: PLL Clock Source Selection +// <0=> Internal RC oscillator +// <1=> Main oscillator +// <2=> RTC oscillator +// </h> +// +// <e3> PLL0 Configuration (Main PLL) +// <h> PLL0 Configuration Register (PLL0CFG) +// <i> F_cco0 = (2 * M * F_in) / N +// <i> F_in must be in the range of 32 kHz to 50 MHz +// <i> F_cco0 must be in the range of 275 MHz to 550 MHz +// <o4.0..14> MSEL: PLL Multiplier Selection +// <6-32768><#-1> +// <i> M Value +// <o4.16..23> NSEL: PLL Divider Selection +// <1-256><#-1> +// <i> N Value +// </h> +// </e> +// +// <e5> PLL1 Configuration (USB PLL) +// <h> PLL1 Configuration Register (PLL1CFG) +// <i> F_usb = M * F_osc or F_usb = F_cco1 / (2 * P) +// <i> F_cco1 = F_osc * M * 2 * P +// <i> F_cco1 must be in the range of 156 MHz to 320 MHz +// <o6.0..4> MSEL: PLL Multiplier Selection +// <1-32><#-1> +// <i> M Value (for USB maximum value is 4) +// <o6.5..6> PSEL: PLL Divider Selection +// <0=> 1 +// <1=> 2 +// <2=> 4 +// <3=> 8 +// <i> P Value +// </h> +// </e> +// +// <h> CPU Clock Configuration Register (CCLKCFG) +// <o7.0..7> CCLKSEL: Divide Value for CPU Clock from PLL0 +// <3-256><#-1> +// </h> +// +// <h> USB Clock Configuration Register (USBCLKCFG) +// <o8.0..3> USBSEL: Divide Value for USB Clock from PLL0 +// <0-15> +// <i> Divide is USBSEL + 1 +// </h> +// +// <h> Peripheral Clock Selection Register 0 (PCLKSEL0) +// <o9.0..1> PCLK_WDT: Peripheral Clock Selection for WDT +// <0=> Pclk = Cclk / 4 +// <1=> Pclk = Cclk +// <2=> Pclk = Cclk / 2 +// <3=> Pclk = Hclk / 8 +// <o9.2..3> PCLK_TIMER0: Peripheral Clock Selection for TIMER0 +// <0=> Pclk = Cclk / 4 +// <1=> Pclk = Cclk +// <2=> Pclk = Cclk / 2 +// <3=> Pclk = Hclk / 8 +// <o9.4..5> PCLK_TIMER1: Peripheral Clock Selection for TIMER1 +// <0=> Pclk = Cclk / 4 +// <1=> Pclk = Cclk +// <2=> Pclk = Cclk / 2 +// <3=> Pclk = Hclk / 8 +// <o9.6..7> PCLK_UART0: Peripheral Clock Selection for UART0 +// <0=> Pclk = Cclk / 4 +// <1=> Pclk = Cclk +// <2=> Pclk = Cclk / 2 +// <3=> Pclk = Hclk / 8 +// <o9.8..9> PCLK_UART1: Peripheral Clock Selection for UART1 +// <0=> Pclk = Cclk / 4 +// <1=> Pclk = Cclk +// <2=> Pclk = Cclk / 2 +// <3=> Pclk = Hclk / 8 +// <o9.12..13> PCLK_PWM1: Peripheral Clock Selection for PWM1 +// <0=> Pclk = Cclk / 4 +// <1=> Pclk = Cclk +// <2=> Pclk = Cclk / 2 +// <3=> Pclk = Hclk / 8 +// <o9.14..15> PCLK_I2C0: Peripheral Clock Selection for I2C0 +// <0=> Pclk = Cclk / 4 +// <1=> Pclk = Cclk +// <2=> Pclk = Cclk / 2 +// <3=> Pclk = Hclk / 8 +// <o9.16..17> PCLK_SPI: Peripheral Clock Selection for SPI +// <0=> Pclk = Cclk / 4 +// <1=> Pclk = Cclk +// <2=> Pclk = Cclk / 2 +// <3=> Pclk = Hclk / 8 +// <o9.20..21> PCLK_SSP1: Peripheral Clock Selection for SSP1 +// <0=> Pclk = Cclk / 4 +// <1=> Pclk = Cclk +// <2=> Pclk = Cclk / 2 +// <3=> Pclk = Hclk / 8 +// <o9.22..23> PCLK_DAC: Peripheral Clock Selection for DAC +// <0=> Pclk = Cclk / 4 +// <1=> Pclk = Cclk +// <2=> Pclk = Cclk / 2 +// <3=> Pclk = Hclk / 8 +// <o9.24..25> PCLK_ADC: Peripheral Clock Selection for ADC +// <0=> Pclk = Cclk / 4 +// <1=> Pclk = Cclk +// <2=> Pclk = Cclk / 2 +// <3=> Pclk = Hclk / 8 +// <o9.26..27> PCLK_CAN1: Peripheral Clock Selection for CAN1 +// <0=> Pclk = Cclk / 4 +// <1=> Pclk = Cclk +// <2=> Pclk = Cclk / 2 +// <3=> Pclk = Hclk / 6 +// <o9.28..29> PCLK_CAN2: Peripheral Clock Selection for CAN2 +// <0=> Pclk = Cclk / 4 +// <1=> Pclk = Cclk +// <2=> Pclk = Cclk / 2 +// <3=> Pclk = Hclk / 6 +// <o9.30..31> PCLK_ACF: Peripheral Clock Selection for ACF +// <0=> Pclk = Cclk / 4 +// <1=> Pclk = Cclk +// <2=> Pclk = Cclk / 2 +// <3=> Pclk = Hclk / 6 +// </h> +// +// <h> Peripheral Clock Selection Register 1 (PCLKSEL1) +// <o10.0..1> PCLK_QEI: Peripheral Clock Selection for the Quadrature Encoder Interface +// <0=> Pclk = Cclk / 4 +// <1=> Pclk = Cclk +// <2=> Pclk = Cclk / 2 +// <3=> Pclk = Hclk / 8 +// <o10.2..3> PCLK_GPIO: Peripheral Clock Selection for GPIOs +// <0=> Pclk = Cclk / 4 +// <1=> Pclk = Cclk +// <2=> Pclk = Cclk / 2 +// <3=> Pclk = Hclk / 8 +// <o10.4..5> PCLK_PCB: Peripheral Clock Selection for the Pin Connect Block +// <0=> Pclk = Cclk / 4 +// <1=> Pclk = Cclk +// <2=> Pclk = Cclk / 2 +// <3=> Pclk = Hclk / 8 +// <o10.6..7> PCLK_I2C1: Peripheral Clock Selection for I2C1 +// <0=> Pclk = Cclk / 4 +// <1=> Pclk = Cclk +// <2=> Pclk = Cclk / 2 +// <3=> Pclk = Hclk / 8 +// <o10.10..11> PCLK_SSP0: Peripheral Clock Selection for SSP0 +// <0=> Pclk = Cclk / 4 +// <1=> Pclk = Cclk +// <2=> Pclk = Cclk / 2 +// <3=> Pclk = Hclk / 8 +// <o10.12..13> PCLK_TIMER2: Peripheral Clock Selection for TIMER2 +// <0=> Pclk = Cclk / 4 +// <1=> Pclk = Cclk +// <2=> Pclk = Cclk / 2 +// <3=> Pclk = Hclk / 8 +// <o10.14..15> PCLK_TIMER3: Peripheral Clock Selection for TIMER3 +// <0=> Pclk = Cclk / 4 +// <1=> Pclk = Cclk +// <2=> Pclk = Cclk / 2 +// <3=> Pclk = Hclk / 8 +// <o10.16..17> PCLK_UART2: Peripheral Clock Selection for UART2 +// <0=> Pclk = Cclk / 4 +// <1=> Pclk = Cclk +// <2=> Pclk = Cclk / 2 +// <3=> Pclk = Hclk / 8 +// <o10.18..19> PCLK_UART3: Peripheral Clock Selection for UART3 +// <0=> Pclk = Cclk / 4 +// <1=> Pclk = Cclk +// <2=> Pclk = Cclk / 2 +// <3=> Pclk = Hclk / 8 +// <o10.20..21> PCLK_I2C2: Peripheral Clock Selection for I2C2 +// <0=> Pclk = Cclk / 4 +// <1=> Pclk = Cclk +// <2=> Pclk = Cclk / 2 +// <3=> Pclk = Hclk / 8 +// <o10.22..23> PCLK_I2S: Peripheral Clock Selection for I2S +// <0=> Pclk = Cclk / 4 +// <1=> Pclk = Cclk +// <2=> Pclk = Cclk / 2 +// <3=> Pclk = Hclk / 8 +// <o10.26..27> PCLK_RIT: Peripheral Clock Selection for the Repetitive Interrupt Timer +// <0=> Pclk = Cclk / 4 +// <1=> Pclk = Cclk +// <2=> Pclk = Cclk / 2 +// <3=> Pclk = Hclk / 8 +// <o10.28..29> PCLK_SYSCON: Peripheral Clock Selection for the System Control Block +// <0=> Pclk = Cclk / 4 +// <1=> Pclk = Cclk +// <2=> Pclk = Cclk / 2 +// <3=> Pclk = Hclk / 8 +// <o10.30..31> PCLK_MC: Peripheral Clock Selection for the Motor Control PWM +// <0=> Pclk = Cclk / 4 +// <1=> Pclk = Cclk +// <2=> Pclk = Cclk / 2 +// <3=> Pclk = Hclk / 8 +// </h> +// +// <h> Power Control for Peripherals Register (PCONP) +// <o11.1> PCTIM0: Timer/Counter 0 power/clock enable +// <o11.2> PCTIM1: Timer/Counter 1 power/clock enable +// <o11.3> PCUART0: UART 0 power/clock enable +// <o11.4> PCUART1: UART 1 power/clock enable +// <o11.6> PCPWM1: PWM 1 power/clock enable +// <o11.7> PCI2C0: I2C interface 0 power/clock enable +// <o11.8> PCSPI: SPI interface power/clock enable +// <o11.9> PCRTC: RTC power/clock enable +// <o11.10> PCSSP1: SSP interface 1 power/clock enable +// <o11.12> PCAD: A/D converter power/clock enable +// <o11.13> PCCAN1: CAN controller 1 power/clock enable +// <o11.14> PCCAN2: CAN controller 2 power/clock enable +// <o11.15> PCGPIO: GPIOs power/clock enable +// <o11.16> PCRIT: Repetitive interrupt timer power/clock enable +// <o11.17> PCMC: Motor control PWM power/clock enable +// <o11.18> PCQEI: Quadrature encoder interface power/clock enable +// <o11.19> PCI2C1: I2C interface 1 power/clock enable +// <o11.21> PCSSP0: SSP interface 0 power/clock enable +// <o11.22> PCTIM2: Timer 2 power/clock enable +// <o11.23> PCTIM3: Timer 3 power/clock enable +// <o11.24> PCUART2: UART 2 power/clock enable +// <o11.25> PCUART3: UART 3 power/clock enable +// <o11.26> PCI2C2: I2C interface 2 power/clock enable +// <o11.27> PCI2S: I2S interface power/clock enable +// <o11.29> PCGPDMA: GP DMA function power/clock enable +// <o11.30> PCENET: Ethernet block power/clock enable +// <o11.31> PCUSB: USB interface power/clock enable +// </h> +// +// <h> Clock Output Configuration Register (CLKOUTCFG) +// <o12.0..3> CLKOUTSEL: Selects clock source for CLKOUT +// <0=> CPU clock +// <1=> Main oscillator +// <2=> Internal RC oscillator +// <3=> USB clock +// <4=> RTC oscillator +// <o12.4..7> CLKOUTDIV: Selects clock divider for CLKOUT +// <1-16><#-1> +// <o12.8> CLKOUT_EN: CLKOUT enable control +// </h> +// +// </e> +*/ + + + +/** @addtogroup LPC17xx_System_Defines LPC17xx System Defines + @{ + */ + +#define CLOCK_SETUP 1 +#define SCS_Val 0x00000020 +#define CLKSRCSEL_Val 0x00000001 +#define PLL0_SETUP 1 +#define PLL0CFG_Val 0x00050063 +#define PLL1_SETUP 1 +#define PLL1CFG_Val 0x00000023 +#define CCLKCFG_Val 0x00000003 +#define USBCLKCFG_Val 0x00000000 +#define PCLKSEL0_Val 0x00000000 +#define PCLKSEL1_Val 0x00000000 +#define PCONP_Val 0x042887DE +#define CLKOUTCFG_Val 0x00000000 + + +/*--------------------- Flash Accelerator Configuration ---------------------- +// +// <e> Flash Accelerator Configuration +// <o1.0..11> Reserved +// <o1.12..15> FLASHTIM: Flash Access Time +// <0=> 1 CPU clock (for CPU clock up to 20 MHz) +// <1=> 2 CPU clocks (for CPU clock up to 40 MHz) +// <2=> 3 CPU clocks (for CPU clock up to 60 MHz) +// <3=> 4 CPU clocks (for CPU clock up to 80 MHz) +// <4=> 5 CPU clocks (for CPU clock up to 100 MHz) +// <5=> 6 CPU clocks (for any CPU clock) +// </e> +*/ +#define FLASH_SETUP 1 +#define FLASHCFG_Val 0x0000303A + +/* +//-------- <<< end of configuration section >>> ------------------------------ +*/ + +/*---------------------------------------------------------------------------- + Check the register settings + *----------------------------------------------------------------------------*/ +#define CHECK_RANGE(val, min, max) ((val < min) || (val > max)) +#define CHECK_RSVD(val, mask) (val & mask) + +/* Clock Configuration -------------------------------------------------------*/ +#if (CHECK_RSVD((SCS_Val), ~0x00000030)) + #error "SCS: Invalid values of reserved bits!" +#endif + +#if (CHECK_RANGE((CLKSRCSEL_Val), 0, 2)) + #error "CLKSRCSEL: Value out of range!" +#endif + +#if (CHECK_RSVD((PLL0CFG_Val), ~0x00FF7FFF)) + #error "PLL0CFG: Invalid values of reserved bits!" +#endif + +#if (CHECK_RSVD((PLL1CFG_Val), ~0x0000007F)) + #error "PLL1CFG: Invalid values of reserved bits!" +#endif + +#if ((CCLKCFG_Val != 0) && (((CCLKCFG_Val - 1) % 2))) + #error "CCLKCFG: CCLKSEL field does not contain only odd values or 0!" +#endif + +#if (CHECK_RSVD((USBCLKCFG_Val), ~0x0000000F)) + #error "USBCLKCFG: Invalid values of reserved bits!" +#endif + +#if (CHECK_RSVD((PCLKSEL0_Val), 0x000C0C00)) + #error "PCLKSEL0: Invalid values of reserved bits!" +#endif + +#if (CHECK_RSVD((PCLKSEL1_Val), 0x03000300)) + #error "PCLKSEL1: Invalid values of reserved bits!" +#endif + +#if (CHECK_RSVD((PCONP_Val), 0x10100821)) + #error "PCONP: Invalid values of reserved bits!" +#endif + +#if (CHECK_RSVD((CLKOUTCFG_Val), ~0x000001FF)) + #error "CLKOUTCFG: Invalid values of reserved bits!" +#endif + +/* Flash Accelerator Configuration -------------------------------------------*/ +#if (CHECK_RSVD((FLASHCFG_Val), ~0x0000F07F)) + #error "FLASHCFG: Invalid values of reserved bits!" +#endif + + +/*---------------------------------------------------------------------------- + DEFINES + *----------------------------------------------------------------------------*/ + +/*---------------------------------------------------------------------------- + Define clocks + *----------------------------------------------------------------------------*/ +#define XTAL (12000000UL) /* Oscillator frequency */ +#define OSC_CLK ( XTAL) /* Main oscillator frequency */ +#define RTC_CLK ( 32768UL) /* RTC oscillator frequency */ +#define IRC_OSC ( 4000000UL) /* Internal RC oscillator frequency */ + + +/* F_cco0 = (2 * M * F_in) / N */ +#define __M (((PLL0CFG_Val ) & 0x7FFF) + 1) +#define __N (((PLL0CFG_Val >> 16) & 0x00FF) + 1) +#define __FCCO(__F_IN) ((2 * __M * __F_IN) / __N) +#define __CCLK_DIV (((CCLKCFG_Val ) & 0x00FF) + 1) + +/* Determine core clock frequency according to settings */ + #if (PLL0_SETUP) + #if ((CLKSRCSEL_Val & 0x03) == 1) + #define __CORE_CLK (__FCCO(OSC_CLK) / __CCLK_DIV) + #elif ((CLKSRCSEL_Val & 0x03) == 2) + #define __CORE_CLK (__FCCO(RTC_CLK) / __CCLK_DIV) + #else + #define __CORE_CLK (__FCCO(IRC_OSC) / __CCLK_DIV) + #endif + #else + #if ((CLKSRCSEL_Val & 0x03) == 1) + #define __CORE_CLK (OSC_CLK / __CCLK_DIV) + #elif ((CLKSRCSEL_Val & 0x03) == 2) + #define __CORE_CLK (RTC_CLK / __CCLK_DIV) + #else + #define __CORE_CLK (IRC_OSC / __CCLK_DIV) + #endif + #endif + + /** + * @} + */ + + +/** @addtogroup LPC17xx_System_Public_Variables LPC17xx System Public Variables + @{ + */ +/*---------------------------------------------------------------------------- + Clock Variable definitions + *----------------------------------------------------------------------------*/ +//uint32_t SystemCoreClock = __CORE_CLK;/*!< System Clock Frequency (Core Clock)*/ + +/** + * @} + */ + + +/** @addtogroup LPC17xx_System_Public_Functions LPC17xx System Public Functions + @{ + */ + +/*---------------------------------------------------------------------------- + Clock functions + *----------------------------------------------------------------------------*/ + + + + +/** + * Initialize the system + * + * @param none + * @return none + * + * @brief Setup the microcontroller system. + * Initialize the System. + */ + /* +void SystemInit (void) +{ +#if (CLOCK_SETUP) // Clock Setup + LPC_SC->SCS = SCS_Val; + if (LPC_SC->SCS & (1 << 5)) { // If Main Oscillator is enabled + while ((LPC_SC->SCS & (1<<6)) == 0);// Wait for Oscillator to be ready + } + + LPC_SC->CCLKCFG = CCLKCFG_Val; // Setup Clock Divider + + LPC_SC->PCLKSEL0 = PCLKSEL0_Val; // Peripheral Clock Selection + LPC_SC->PCLKSEL1 = PCLKSEL1_Val; + +#if (PLL0_SETUP) + LPC_SC->CLKSRCSEL = CLKSRCSEL_Val; // Select Clock Source for PLL0 + + LPC_SC->PLL0CFG = PLL0CFG_Val; // configure PLL0 + LPC_SC->PLL0FEED = 0xAA; + LPC_SC->PLL0FEED = 0x55; + + LPC_SC->PLL0CON = 0x01; // PLL0 Enable + LPC_SC->PLL0FEED = 0xAA; + LPC_SC->PLL0FEED = 0x55; + while (!(LPC_SC->PLL0STAT & (1<<26)));// Wait for PLOCK0 + + LPC_SC->PLL0CON = 0x03; // PLL0 Enable & Connect + LPC_SC->PLL0FEED = 0xAA; + LPC_SC->PLL0FEED = 0x55; + while (!(LPC_SC->PLL0STAT & ((1<<25) | (1<<24))));//Wait for PLLC0_STAT & PLLE0_STAT +#endif + +#if (PLL1_SETUP) + LPC_SC->PLL1CFG = PLL1CFG_Val; + LPC_SC->PLL1FEED = 0xAA; + LPC_SC->PLL1FEED = 0x55; + + LPC_SC->PLL1CON = 0x01; // PLL1 Enable + LPC_SC->PLL1FEED = 0xAA; + LPC_SC->PLL1FEED = 0x55; + while (!(LPC_SC->PLL1STAT & (1<<10)));// Wait for PLOCK1 + + LPC_SC->PLL1CON = 0x03; // PLL1 Enable & Connect + LPC_SC->PLL1FEED = 0xAA; + LPC_SC->PLL1FEED = 0x55; + while (!(LPC_SC->PLL1STAT & ((1<< 9) | (1<< 8))));// Wait for PLLC1_STAT & PLLE1_STAT +#else + LPC_SC->USBCLKCFG = USBCLKCFG_Val; // Setup USB Clock Divider +#endif + LPC_SC->PCONP = PCONP_Val; // Power Control for Peripherals + + LPC_SC->CLKOUTCFG = CLKOUTCFG_Val; // Clock Output Configuration +#endif + +#if (FLASH_SETUP == 1) // Flash Accelerator Setup + LPC_SC->FLASHCFG = FLASHCFG_Val; +#endif + +// Set Vector table offset value +#if (__RAM_MODE__==1) + SCB->VTOR = 0x10000000 & 0x3FFFFF80; +#else + SCB->VTOR = 0x00000000 & 0x3FFFFF80; +#endif +} + +*/ +/** + * @} + */ + +/** + * @} + */