?? usb430.c
字號:
#include <stdio.h>
#include <string.h>
#include <msp430x14x.h> /* special function register declarations */
#include "epphal.h"
#include "d12ci.h"
#include "mainloop.h"
#include "usb100.h"
#include "chap_9.h"
/*;
;*************************************************************************
; USB protocol function pointer arrays
;*************************************************************************
*/
void (*StandardDeviceRequest[])(void) =
{
get_status,
clear_feature,
reserved,
set_feature,
reserved,
set_address,
get_descriptor,
reserved,
get_configuration,
set_configuration,
get_interface,
set_interface,
reserved,
reserved,
reserved,
reserved
}; //標準請求處理函數入口列表
/*;
;*************************************************************************
; Public static data
;*************************************************************************
*/
DEVICE_REQUEST DeviceRequest[30];
unsigned char LastState_0[30];
unsigned char LastState_1[30];
unsigned int CNT = 0;
unsigned int CNT_1 = 0;
EPPFLAGS bEPPflags;
CONTROL_XFER ControlData;
unsigned char GenEpBuf[EP1_PACKET_SIZE];
unsigned char MainEpBuf[];
unsigned char EpBuf[EP2_PACKET_SIZE];
unsigned int ClockTicks;
void init_TimerB(void)
{
TBCTL = TBSSEL_2 + TBCLR; //Timer B clock source select: 2 - SMCLK
TBCCR0 = 7; // PWM Period:500K Hz
TBCCTL1 = OUTMOD_7; // CCR1 toggle/set
TBCCR1 = 4; // CCR1 PWM duty cycle
TBCTL |= MC0; // Start Timer_B in up mode
}
void init_TimerA(void)
{
TACTL = TASSEL1 + TACLR; // SMCLK, clear TAR
CCR0 = 10000;
}
// Timer A0 interrupt service routine
#pragma vector=TIMERA0_VECTOR
__interrupt void Timer_A (void)
{
ClockTicks++;
}
void init_special_interrupts(void)
{
P1DIR &=~0X04;
P1IFG = 0X0;
P1IES &=~0X04;
}
void init_port(void)
{
P5DIR = 0XFF;
P4OUT = 0xFF;
P4DIR = 0XFF;
P4SEL |= 0X02; //TB PWM Output:500K Hz
P3DIR |= 0X40;
P3OUT |= 0X40;
}
/*A/D conversion setup*/
void init_AD(void)
{ P6SEL = 0xFF; // Pin P6 used by ADC module
ADC12CTL0 &=~ 0x02; // Disable conversion before changing
// the ADC12 settings!!!
/* selection of reference and input */
ADC12MCTL0 = 0x10; // Ref = AVss, Vref+; Input = A0
ADC12MCTL1 = 0x11; // Ref = AVss, AVcc; Input = A1
ADC12MCTL2 = 0x12; // Ref = AVss, AVcc; Input = A2
ADC12MCTL3 = 0x93; // Ref = AVss, AVcc; Input = A3
ADC12MCTL4 = 0x84; // Ref = AVss, AVcc; Input = A4
ADC12MCTL5 = 0x85; // Ref = AVss, AVcc; Input = A5
ADC12MCTL6 = 0x86; // Ref = AVss, AVcc; Input = A6
ADC12MCTL7 = 0x87; // Ref = AVss, AVcc; Input = A7 //由通道A1至A8
ADC12MCTL8 = 0x88; // Ref = AVss, AVcc; Input = A8 //進行序列轉換，
ADC12MCTL9 = 0x89; // Ref = AVss, AVcc; Input = A9
ADC12MCTL10 = 0x8A; // Ref = AVss, AVcc; Input = A10
ADC12MCTL11 = 0x8B; // Ref = AVss, AVcc; Input = A11 //A8-A15不進行轉換。
ADC12MCTL12 = 0x8C; // Ref = AVss, AVcc; Input = A12
ADC12MCTL13 = 0x8D; // Ref = AVss, AVcc; Input = A13
ADC12MCTL14 = 0x8E; // Ref = AVss, AVcc; Input = A14
ADC12MCTL15 = 0x8F; // Ref = AVss, AVcc; Input = A15
// ADC12MCTL7 定義了序列結束點；
// (EOS bit is set!)
ADC12CTL1 = 0x0200; //序列單次轉換模式，第一個結果存在
//ADC12MEM0中，采樣信號由采樣定時器控制；
ADC12CTL0 = 0x0070; //采用2.5V內部參考電壓，打開由部參考電壓，
//打開ADC12內核。
ADC12CTL0 |= SHT0_0;
ADC12CTL0 |= 0x02; // enable conversion
}
void init(void)
{
unsigned char i;
WDTCTL = WDTPW + WDTHOLD; // Stop WDT
BCSCTL1 &= ~XT2OFF; //Enable high frequency oscillator
BCSCTL2 = 0X88; //MCLK = SMCLK = 4M Hz
do
{
IFG1 &= ~OFIFG; // Clear OSCFault flag
for (i = 0xFF; i > 0; i--); // Time for flag to set
}
while ((IFG1 & OFIFG) == OFIFG); // OSCFault flag still set?
init_AD();
init_port();
init_special_interrupts();
init_TimerA();
init_TimerB();
D12_SetAddressEnable(0x0,1);
init_config();
}
void main(void)
{
unsigned char adflag = 0;
unsigned char channal;
unsigned int aver,adcount = 0;
unsigned int advalue[32];
unsigned char sendvalue[64],adindex = 0;
unsigned long adtotal[4] = {0};
_DINT();
init();
MCU_D12RST_0;
_NOP();
MCU_D12RST_1; //reset usb 芯片
bEPPflags.value = 0;
_EINT();
reconnect_USB();
P1IE = 0X04;
while(1)
{
if (adflag) //A/D轉換數據發送
{
//D12_WriteEndpoint(5,64,test2); //主端點發送測試
for (adcount=0;adcount < aver;adcount++)
{
ADC12CTL0 |= 0x01; //開始轉換。
//ADC12CTL0 |= SHT0_15;
//ADC12CTL0 &=~0x01;
while (ADC12CTL1&0x01); //轉換完成了嗎？
switch (channal)
{
case 1:adtotal[0]+=ADC12MEM0;break;
case 2:adtotal[1]+=ADC12MEM1;break;
case 3:adtotal[2]+=ADC12MEM2;break;
case 4:adtotal[3]+=ADC12MEM3;break;
}
}
advalue[adindex]=adtotal[channal-1]/aver;adtotal[channal-1]=0;
sendvalue[adindex*2]=advalue[adindex]/256;
sendvalue[adindex*2+1]=advalue[adindex]%256;
adindex++;
if (adindex>=32)
{
adindex=0;D12_WriteEndpoint(5,64,sendvalue);
}
}//if adflag
if (bEPPflags.bits.ep1_rxdone) //端點1接收響應
{
bEPPflags.bits.ep1_rxdone = 0; //flag set zero
if(GenEpBuf[3] == 0xff)
adflag = 1; //start A/D
else if(GenEpBuf[3] == 0xfe)
adflag = 0; //stop A/D
else
{
aver = GenEpBuf[0] * 256 + GenEpBuf[1]; //獲得平均次數
channal = GenEpBuf[3]; //獲得通道選擇
//adcount=0;
adindex = 0;
adtotal[channal-1] = 0;
ADC12CTL0 &= ~0x02; //ENC=0
ADC12CTL1 &= ~0xf000;
ADC12CTL1 |= ((channal-1)<<12); //選擇轉換通道
ADC12CTL0 |= 0x02; //ENC=1
}
}//if bEPPflags.bits.ep1_rxdone
if (bEPPflags.bits.timer)
{ //計時器中斷響應
bEPPflags.bits.timer = 0;
}
if (bEPPflags.bits.bus_reset)
{ //總線重起中斷響應
_DINT();
bEPPflags.bits.bus_reset = 0;
_EINT();
} // if bus reset
if (bEPPflags.bits.suspend)
{ //掛起中斷響應
_DINT();
bEPPflags.bits.suspend= 0;
_EINT();
if((P4OUT & D12_SUSPD) == D12_SUSPD)
{
D12_SUSPD_0;
P5DIR = 0XFF;
P5OUT = 0xFF;
P5DIR = 0X0;
P4DIR = 0XFF;
P4OUT = 0xFF;
D12_SetDMA(0xC3);
D12_SUSPD_1;
}
} // if suspend change
if (bEPPflags.bits.setup_packet)
{ //接收到設置包中斷處理
_DINT();
bEPPflags.bits.setup_packet = 0;
control_handler();
_EINT();
//P1OUT |=D12SUSPD;
} // if setup_packet
} // Main Loop
}
void stall_ep0(void)
{
D12_SetEndpointStatus(0, 1);
D12_SetEndpointStatus(1, 1);
}
void disconnect_USB(void)
{
// Initialize D12 configuration
D12_SetMode(D12_NOLAZYCLOCK, D12_SETTOONE | D12_CLOCK_12M);
}
void connect_USB(void)
{
// reset event flags
bEPPflags.value = 0;
D12_SetMode(D12_NOLAZYCLOCK|D12_SOFTCONNECT, D12_SETTOONE | D12_CLOCK_12M);
}
void reconnect_USB(void)
{
// Pull-down D12's SUSPEND pin
// Release D12's SUSPEND pin after receiving bus reset from host
D12_SUSPD_0;
disconnect_USB();
ClockTicks = 0;
TACCTL0 = CCIE; // TACCR0 interrupt enabled
TACTL |= MC0;
while(ClockTicks < 400) P3OUT &= ~0X40;
TACTL = 0;
TACCTL0 = 0;
P3OUT |= 0X40;
connect_USB();
}
void init_unconfig(void)
{
D12_SetEndpointEnable(0); /* Disable all endpoints but EPP0. */
}
void init_config(void)
{
D12_SetEndpointEnable(1); /* Enable generic/iso endpoints. */
}
void single_transmit(unsigned char * buf, unsigned char len)
{
if( len <= EP0_PACKET_SIZE) {
D12_WriteEndpoint(1, len, buf);
}
}
void code_transmit(unsigned char * pRomData, unsigned short len)
{
ControlData.wCount = 0;
if(ControlData.wLength > len)
ControlData.wLength = len;
ControlData.pData = pRomData;
if( ControlData.wLength >= EP0_PACKET_SIZE) {
D12_WriteEndpoint(1, EP0_PACKET_SIZE, ControlData.pData);
ControlData.wCount += EP0_PACKET_SIZE;
_DINT();
bEPPflags.bits.control_state = USB_TRANSMIT; //總線處于傳輸狀態
_EINT();
}
else {
D12_WriteEndpoint(1, ControlData.wLength, pRomData);
ControlData.wCount += ControlData.wLength;
_DINT();
bEPPflags.bits.control_state = USB_IDLE; //總線空閑
_EINT();
}
}
void control_handler(void) //usb請求處理程序
{
unsigned char type, req;
type = ControlData.DeviceRequest.bmRequestType & USB_REQUEST_TYPE_MASK; //請求類型：標準or廠商
req = ControlData.DeviceRequest.bRequest & USB_REQUEST_MASK; //具體請求代號
if (type == USB_STANDARD_REQUEST) //標準請求處理
(*StandardDeviceRequest[req])();
else
stall_ep0();
}
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