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/*---------------------------------------------------------------------------------------------------------*/
/* @file     tm1812.c                                                                                                                                                                           */
/* @version  V1.00                                                                                                                                                                                   */
/* $Date:          15/07/01 11:44a $                                                                                                                                                           */
/* @brief    M051 Series UART for M35 GPRS Sample Code                                                                                                      */
/* Copyright(c) PM9GZY Technology Corp. yuanxihua@21cn.com. All rights reserved.                                     */
/*                                                                                                         */
/*---------------------------------------------------------------------------------------------------------*/
#include "main.h"
/*   M0516LBN MOSI -->  TM1812  DIN   */
/*
逻辑0        高电平时间        350－450ns        低电平时间        800－900ns
逻辑1        高电平时间        700－999ns        低电平时间        250－550ns
位逻辑  低电平时间        8-24us
逻辑0        高400NS        低800NS
逻辑1        高800NS 低400NS
复位        低2000NS
*/
/* Function prototype declaration */
void SPI0_Init(void);
void spi0_write(uint32_t word)
{
//        while(SPI_GET_TX_FIFO_FULL_FLAG(SPI0));
        /* Write to TX register */
        SPI_WRITE_TX0(SPI0, word);
        /* Trigger SPI data transfer */
        SPI_TRIGGER(SPI0);
        /* Check SPI0 busy status */
        while(SPI_IS_BUSY(SPI0));
        /* Read received data */
//        tmp = SPI_READ_RX0(SPI0);tmp=tmp;
}
//SPI的时钟定为2.5MHZ，也就是400NS，一个数据位用3位SPI波形来表示；
//那么就把一个数据字节扩展成了24位的SPI波形字长；
//把逻辑0转化成二进制100就是0x04，就是高400nS，低800nS；
//把逻辑1转化成二进制110就是0x06，就是高800nS，低400nS；
//这样就能用SPI的MOSI发数据来驱动TM1812的DIN。
void tm1812_write_byte(uint8_t byte)
{
        uint32_t tmp,data=0;
        for(uint8_t i=0;i<8;i++){tmp=(byte&1)?0x06:0x04;data|=tmp<<(i*3);byte>>=1;}
        spi0_write(data);
}
void tm1812_display_lamp(color_t *led)
{
        for(uint8_t i=0;i<24;i++)
        {
                tm1812_write_byte(led.red);
                tm1812_write_byte(led.green);
                tm1812_write_byte(led.blue);
        }
        CLK_SysTickDelay(24); //更新显示，复位时间24uS
}
void tm1812_display_all(color_t *color)
{
        color_t led[24];for(uint8_t i=0;i<24;i++){led=*color;}
        tm1812_display_lamp((color_t*)led);
}
void tm1812_display_off(void){uint32_t color =0;tm1812_display_all((color_t *)&color);}
void tm1812_display_key(uint8_t key_value,color_t *color)
{
        color_t led[24];memset((void *)&led[0],0,sizeof(led));
        led[0]=*color;for(uint8_t i=0;i<key_value;i++){led[8+i]=*color;}
        tm1812_display_lamp((color_t*)led);
}
void spi0_test(void)
{
        uint32_t i;
        for(i=0;i<254;i++){uint32_t color=i<<16;tm1812_display_all((color_t *)&color);CLK_SysTickDelayMs(4);}
        while(i--)        {uint32_t color=i<<16;tm1812_display_all((color_t *)&color);CLK_SysTickDelayMs(4);}
        for(i=0;i<254;i++){uint32_t color=i<< 8;tm1812_display_all((color_t *)&color);CLK_SysTickDelayMs(4);}
        while(i--)        {uint32_t color=i<< 8;tm1812_display_all((color_t *)&color);CLK_SysTickDelayMs(4);}
        for(i=0;i<254;i++){uint32_t color=i<< 0;tm1812_display_all((color_t *)&color);CLK_SysTickDelayMs(4);}
        while(i--)        {uint32_t color=i<< 0;tm1812_display_all((color_t *)&color);CLK_SysTickDelayMs(4);}
        tm1812_display_off();CLK_SysTickDelayMs(200);
}
void SPI0_Init(void)
{
        /* Select HCLK as the clock source of SPI0 */
    CLK_SetModuleClock(SPI0_MODULE, CLK_CLKSEL1_SPI0_S_HCLK, MODULE_NoMsk);
    /* Enable SPI0 peripheral clock */
    CLK_EnableModuleClock(SPI0_MODULE);
       
        /* Setup SPI0 multi-function pins */
       
        /* Set P1 multi-function pins for SPI0  */
        SYS->P1_MFP = (SYS->P1_MFP & (~(SYS_MFP_P14_Msk | SYS_MFP_P15_Msk | SYS_MFP_P16_Msk | SYS_MFP_P17_Msk)))
        | (/*SYS_MFP_P14_SPISS0 |*/ SYS_MFP_P15_MOSI_0 /*| SYS_MFP_P16_MISO_0 | SYS_MFP_P17_SPICLK0*/);
       
        /* Set P1。3 pins for GPIO */
        SYS->P1_MFP = (SYS->P1_MFP & (~(SYS_MFP_P13_Msk))) | (SYS_MFP_P13_TXD1);
        /* Configure P1.3 as Input mode */
    GPIO_SetMode(P1, BIT3, GPIO_PMD_INPUT);
    /*---------------------------------------------------------------------------------------------------------*/
    /* Init SPI                                                                                                */
    /*---------------------------------------------------------------------------------------------------------*/
    /* Configure as a master, clock idle low, 24-bit transaction, drive output on falling clock edge and latch input on rising edge. */
    /* Set IP clock divider. SPI clock rate = 2.5MHz */
    SPI_Open(SPI0, SPI_MASTER, SPI_MODE_0, 24, 2500000);
    /* Enable the automatic hardware slave select function. Select the SS pin and configure as low-active. */
    SPI_EnableAutoSS(SPI0, SPI_SS, SPI_SS_ACTIVE_LOW);
}