\/\/example_uart_rxIdleIrq.c<\/p>\n\n\n\n
#include \"example.h\"<\/p>\n\n\n\n
\/\/\u7c7b\u4f3cidle\u4e2d\u65ad\u7684\u4f7f\u7528\u65b9\u5f0f\uff1a
\/\/\u4ee5 UART_INT_RX\uff08\u6536\u4e2d\u65ad\uff09\u548c UART_INT_RT\uff08\u6536\u8d85\u65f6\u4e2d\u65ad\uff09\u914d\u5408\u6765\u5b9e\u73b0idle\u4e2d\u65ad\u7684\u529f\u80fd\u3002
\/\/\u4e32\u53e3\u7684FIFO\u53ea\u670916\u4e2a\u5b57\u8282\uff0c\u901a\u8fc7UART_SetRxIntFifoLevel\u914d\u7f6e\u4e3aUART_INT_FIFO_HALF\u65f6\uff0c\u6bcf\u65368\u4e2a\u5b57\u8282\u4f1a\u6765\u4e00\u6b21UART_INT_RX\u4e2d\u65ad\u3002
\/\/\u5982\u679c\u6536\u53d6\u7684\u957f\u5ea6\u4e0d\u8db38\u4e2a\u5b57\u8282\u65f6\uff0c\u4f1a\u89e6\u53d1UART_INT_RT\u4e2d\u65ad\u3002
\/\/\u6570\u636e\u5904\u7406\u65f6\uff0c\u5982\u679c\u63a5\u6536\u4e0d\u5b9a\u957f\u6570\u636e\u8d85\u8fc78\u4e2a\u4ee5\u4e0a\u7684\uff0c\u8981\u901a\u8fc7UART_INT_RX\u4e2d\u65ad8\u4e2a8\u4e2a\u6765\u6536\u53d6\uff1b\u6700\u540e\u96f6\u788e\u7684\uff0c\u901a\u8fc7UART_INT_RT\u6765\u6536\u53d6\u3002
\/\/\u5168\u90e8\u6536\u53d6\u5b8c\u4ee5\u540e\uff0c\u7531UART_INT_RT\u4e2d\u65ad\u6807\u8bb0\u6765\u5224\u5b9a idle\u5b8c\u6574\u7684\u4e00\u5305\u3002<\/p>\n\n\n\n
volatile char isRecvEnd = 0; \/\/\u662f\u5426\u6536\u53d6idle\u5b8c\u6574\u4e00\u5305
volatile char rcvLen = 0; \/\/rx\u6536\u53d6\u7684\u5305\u7684\u957f\u5ea6
char rxbuf[64]; \/\/rx\u6536\u53d6\u7684\u7f13\u5b58buff
void UART0_isr()
{
if (UART_IsRawIntActive(UART0, UART_INT_RX)) {
UART_ClearInt(UART0, UART_INT_RX);
\/\/\u6ce8\u610f\uff1a\u8fd9\u65f6FIFO\u91cc\u67098\u4e2a\u5b57\u8282\u957f\u5ea6\uff0c\u4f46\u7279\u610f\u4e0d\u5168\u90e8\u6536\u53d6\u3002
\/\/\u8fd9\u4e48\u505a\uff0c\u662f\u4e3a\u4e86\u4fdd\u8bc1\u4f20\u8f93\u6570\u636e\u521a\u597d\u662f8\u7684\u6574\u6570\u500d\u65f6\uff0c\u4ecd\u7136\u4f1a\u89e6\u53d1\u4e0b\u8fb9\u7684UART_INT_RT\u4e2d\u65ad\u3002
UART_Receive(UART0, rxbuf + rcvLen, 7, 0); \/\/half: 16\/2=8\u3002
rcvLen += 7;
} else if (UART_IsRawIntActive(UART0, UART_INT_RT)) {
UART_ClearInt(UART0, UART_INT_RT);
rcvLen += UART_Receive(UART0, rxbuf + rcvLen, 8, 1); \/\/\u6700\u540e\u4e00\u4e2a\u53c2\u6570\u4e0d\u80fd\u4e3a0\uff0c\u4e3a0\u65f6UART_Receive\u662f\u4e0d\u4f1a\u8d85\u65f6\u9000\u51fa\u7684
isRecvEnd = 1; \/\/idle\u4e00\u5305\u6536\u6ee1
}
}<\/p>\n\n\n\n
void TestUartRxIdleIqr(void)
{
GPIO_AF_ENABLE(UART0_UARTRXD)
GPIO_AF_ENABLE(UART0_UARTTXD);
SYS_EnableAPBClock(APB_MASK_UART0);<\/p>\n\n\n\n
UART_Init(UART0, 115200, UART_LCR_DATABITS_8, UART_LCR_STOPBITS_1, UART_LCR_PARITY_NONE, UART_LCR_FIFO_16);<\/p>\n\n\n\n
UART_EnableInt(UART0, UART_INT_RT); \/\/\u914d\u7f6e \u6536\u8d85\u65f6\u4e2d\u65ad
UART_EnableInt(UART0, UART_INT_RX); \/\/\u914d\u7f6e \u6536\u4e2d\u65ad
UART_SetRxIntFifoLevel(UART0, UART_INT_FIFO_HALF); \/\/\u914d\u7f6eFIFO\u6536\u591a\u5c11\u5b57\u8282\u65f6\u4ea7\u751f\u6536\u4e2d\u65ad
INT_EnableIRQ(UART0_IRQn, UART_PRIORITY);<\/p>\n\n\n\n
UART_Send(UART0, \"test idleIrq\\r\\n\", strlen(\"test idleIrq\\r\\n\"));
\/\/test
while(1)
{
UTIL_IdleUs(500e3);<\/p>\n\n\n\n
if (isRecvEnd == 1)
{
UART_Send(UART0, rxbuf, rcvLen);
rcvLen = 0;
isRecvEnd = 0;
}<\/p>\n\n\n\n
}
}<\/p>\n","protected":false},"excerpt":{"rendered":"
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