int main(void) {
/* Configure Clocks (GPIO and DMA clocks already enabled by startup.c) */
RCC_USBCLKConfig(RCC_USBCLKSource_PLLCLK_1Div5);
RCC_APB2PeriphClockCmd( SPI_ENGINE_RCC, ENABLE);
RCC_APB1PeriphClockCmd(RCC_APB1Periph_USB, ENABLE);
/* Configure On-board LED */
GPIO_Init(PORT_LED, &GPIO_InitStructure_LED);
/* Configure SPI Port */
GPIO_Init( GPIOA, &GPIO_InitStructure_SPIOUT);
GPIO_Init( GPIOA, &GPIO_InitStructure_SPIIN);
GPIO_Init( PORT_SS, &GPIO_InitStructure_SPISS);
/* Configure SPI Engine with DMA */
spi_conf(SPI_DEFAULT_SPEED);
/* Configure USB Interrupt */
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_1);
NVIC_Init(&NVIC_InitStructure);
/* Enable all peripherals */
USB_Init();
/* Main loop */
while(1) {
/* Get command */
serprog_handle_command(usb_getc());
/* Flush output via USB */
usb_sync();
}
return 0;
}
int main(void)
{
delay_init(); //延时函数初始化
uart_init(9600); //串口初始化为9600
LED_Init(); //初始化与LED连接的硬件接口
LED0=1;
LED1=1;
LED2=1;
USB_Cable_Config (ENABLE);
delay_ms(500);
USB_Port_Set(0);
delay_ms(500);
USB_Port_Set(1);
Set_USBClock();
USB_Interrupts_Config();
USB_Init();
SPI_IO_Init();
DMA_configuration();
spi_conf(SPI_DEFAULT_SPEED);
LED1=0;
LED2=0;
while(1)
{
/* Get command */
serprog_handle_command(usb_getc());
/* Flush output via USB */
usb_sync();
}
}
void main(void){
WDTCTL = WDTPW + WDTHOLD; // Stop watchdog timer
P1DIR |= BIT0;
general_clock_cong();
spi_conf();
spi_read();
P1OUT &= ~BIT0;
}
void serprog_handle_command(unsigned char command) {
static uint8_t i; /* Loop */
static uint8_t l; /* Length */
static uint32_t slen; /* SPIOP write len */
static uint32_t rlen; /* SPIOP read len */
static uint32_t freq_req;
LED0=0;
switch(command) {
case S_CMD_NOP:
usb_putc(S_ACK);
break;
case S_CMD_Q_IFACE:
usb_putc(S_ACK);
/* little endian multibyte value to complete to 16bit */
usb_putc(S_IFACE_VERSION);
usb_putc(0);
break;
case S_CMD_Q_CMDMAP:
usb_putc(S_ACK);
/* little endian */
usb_putu32(S_CMD_MAP);
for(i = 0; i < 32 - sizeof(uint32_t); i++) usb_putc(0);
break;
case S_CMD_Q_PGMNAME:
usb_putc(S_ACK);
l = 0;
while(S_PGM_NAME[l]) {
usb_putc(S_PGM_NAME[l]);
l ++;
}
for(i = l; i < 16; i++) usb_putc(0);
break;
case S_CMD_Q_SERBUF:
usb_putc(S_ACK);
/* Pretend to be 64K (0xffff) */
usb_putc(0xff);
usb_putc(0xff);
break;
case S_CMD_Q_BUSTYPE:
// TODO: LPC / FWH IO support via PP-Mode
usb_putc(S_ACK);
usb_putc(S_SUPPORTED_BUS);
break;
case S_CMD_Q_CHIPSIZE: break;
case S_CMD_Q_OPBUF:
// TODO: opbuf function 0
break;
case S_CMD_Q_WRNMAXLEN: break;
case S_CMD_R_BYTE: break;
case S_CMD_R_NBYTES: break;
case S_CMD_O_INIT: break;
case S_CMD_O_WRITEB:
// TODO: opbuf function 1
break;
case S_CMD_O_WRITEN:
// TODO: opbuf function 2
break;
case S_CMD_O_DELAY:
// TODO: opbuf function 3
break;
case S_CMD_O_EXEC:
// TODO: opbuf function 4
break;
case S_CMD_SYNCNOP:
usb_putc(S_NAK);
usb_putc(S_ACK);
break;
case S_CMD_Q_RDNMAXLEN:
// TODO
break;
case S_CMD_S_BUSTYPE:
/* We do not have multiplexed bus interfaces,
* so simply ack on supported types, no setup needed. */
if((usb_getc() | S_SUPPORTED_BUS) == S_SUPPORTED_BUS) usb_putc(S_ACK);
else usb_putc(S_NAK);
break;
case S_CMD_O_SPIOP:
slen = usb_getu24();
rlen = usb_getu24();
select_chip();
/* TODO: handle errors with S_NAK */
if(slen) spi_bulk_write(slen);
usb_putc(S_ACK);
if(rlen) spi_bulk_read(rlen);
unselect_chip();
break;
case S_CMD_S_SPI_FREQ:
freq_req = usb_getu32();
if(freq_req == 0) usb_putc(S_NAK);
else {
usb_putc(S_ACK);
usb_putu32(spi_conf(freq_req));
}
break;
default: break; // TODO: Debug malformed command
}
LED0=1;
}