add readline() function in uart.c/uart.h

shohei · Aug 16, 2018 · d14d5b5 · d14d5b5
1 parent 996aa63
commit d14d5b5
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diff --git a/boards/sw_repo/pynqmb/src/uart.c b/boards/sw_repo/pynqmb/src/uart.c
@@ -106,6 +106,18 @@ void uart_read(uart dev_id, char* read_data, unsigned int length){
     XUartLite_Recv(&xuart[dev_id], read_data, length);
 }
 
+void uart_readline(uart dev_id, char* read_data){
+//    XUartLite_Recv(&xuart[dev_id], read_data, length);
+    unsigned int ReceivedCount = 0;
+    while (1) {
+            ReceivedCount += XUartLite_Recv(&xuart[dev_id],
+                           read_data + ReceivedCount,
+                           1);
+            if (read_data[ReceivedCount - 1] == '\n') {
+                break;
+            }
+        }
+}
 
 void uart_write(uart dev_id, char* write_data, unsigned int length){
     XUartLite_Send(&xuart[dev_id], write_data, length);

diff --git a/boards/sw_repo/pynqmb/src/uart.h b/boards/sw_repo/pynqmb/src/uart.h
@@ -63,6 +63,7 @@ typedef int uart;
 uart uart_open_device(unsigned int device);
 uart uart_open(unsigned int tx, unsigned int rx);
 void uart_read(uart dev_id, char* read_data, unsigned int length);
+void uart_readline(uart dev_id, char* read_data);
 void uart_write(uart dev_id, char* write_data, unsigned int length);
 void uart_close(uart dev_id);
 unsigned int uart_get_num_devices(void);