static int __init lpc32xx_dma_init(void)
{
int ret;
ret = request_irq(IRQ_LPC32XX_DMA, dma_irq_handler, 0, "DMA", NULL);
if (ret) {
printk(KERN_CRIT "Wow! Can't register IRQ for DMA\n");
goto out;
}
/* Get DMA clock */
dma_ctrl.clk = clk_get(NULL, "clk_dmac");
if (IS_ERR(dma_ctrl.clk)) {
ret = -ENODEV;
goto errout;
}
clk_enable(dma_ctrl.clk);
/* Clear DMA controller */
__raw_writel(1, DMA_CONFIG(DMAIOBASE));
__raw_writel(0xFF, DMA_INT_TC_CLEAR(DMAIOBASE));
__raw_writel(0xFF, DMA_INT_ERR_CLEAR(DMAIOBASE));
/* Clock is only enabled when needed to save power */
clk_disable(dma_ctrl.clk);
return 0;
errout:
free_irq(IRQ_LPC32XX_DMA, NULL);
out:
return ret;
}
static void dma_clocks_down(void)
{
dma_ctrl.num_clks--;
/* Disable DMA clock if needed */
if (dma_ctrl.num_clks == 0)
{
__raw_writel(0, DMA_CONFIG(DMAIOBASE));
clk_disable(dma_ctrl.clk);
}
}
static void dma_clocks_up(void)
{
/* Enable DMA clock if needed */
if (dma_ctrl.num_clks == 0)
{
clk_enable(dma_ctrl.clk);
__raw_writel(DMAC_CTRL_ENABLE, DMA_CONFIG(DMAIOBASE));
}
dma_ctrl.num_clks++;
}
int main(void) {
u8 loop = 1;
char string[256];
//char string1[256];
uint16_t value;
uint16_t sizestring;
int icase = 0;
initPA15();
init_USART1(BT_BAUD);
systick_init();
led_Init();
button_init();
UART2_CONFIG(9600);//
DMA_CONFIG();
setPA15On();
togglePA15();
while(loop){
//Send data through the bluetooth communication
if (GPIOA->IDR & 0x0001)
{
if (CheckTick(delay_1,500))
{
delay_1 = GetTickCount();
USART_puts(USART1, "troi oi 1 2 3 4 5 6 7 8 9 10\n");
led12();
}
}
if (CheckTick(delay_2,1000))
{
delay_2 = GetTickCount();
//led13();
}
if (CheckTick(delay_3,5000))
{
delay_3 = GetTickCount();
led14();
}
if (CheckTick(delay_4,100))
{
delay_4 = GetTickCount();
while(USART_GetFlagStatus(USART1, USART_FLAG_RXNE) == RESET);
//while(DMA_GetFlagStatus(DMA1_Stream2,DMA_FLAG_TCIF1) == RESET);
value = USART_ReceiveData(USART1);
memset(string,0,sizeof(string[0])*256); // Clear all to 0 so string properly represented
sprintf(string,"%c",value);
//sizestring = sizeof(string);
//sprintf(string1,"%c",sizestring);
if (string != NULL)
{
//USART_puts(USART1,string);
if (string != NULL) icase = 1;
else if (memchr(string, '2', sizeof(string))) icase = 2;
else if (memchr(string, '3', sizeof(string))) icase = 3;
else if (memchr(string, '4', sizeof(string))) icase = 4;
else if (memchr(string, '5', sizeof(string))) icase = 5;
//else icase = 6;
switch (icase)
{
case 1:
{
USART_puts(USART1,string);
icase = 0;
led15();
}
break;
case 2:
{
USART_puts(USART1,"di xuong");
icase = 0;
//led14();
}
break;
case 3:
{
USART_puts(USART1,"sang trai");
icase = 0;
//led13();
}
break;
case 4:
{
USART_puts(USART1,"sang phai");
icase = 0;
}
break;
case 5:
{
USART_puts(USART1,"can bang");
icase = 0;
}
break;
// case 6:
// {
// //USART_puts(USART1,string);
// icase = 0;
// }
// break;
default: break;
}
//usart_send_string(string);
//USART_SendData(USART1,value);
}
else
{
//usart_send_string(string);
}
led15();
}
if (CheckTick(delay_5,250))
{
delay_5 = GetTickCount();
}
/* Disable the UART connection */
//USART_Cmd(USART1, DISABLE);
}
}
