serial_putc waits for the transmission to complete

d-kato · adbridge · commit b5ccf5173412 · 2019-11-18T15:48:17.000Z
diff --git a/targets/TARGET_RENESAS/TARGET_RZ_A1XX/serial_api.c b/targets/TARGET_RENESAS/TARGET_RZ_A1XX/serial_api.c
@@ -592,6 +592,7 @@ void serial_putc(serial_t *obj, int c) {
     while (!serial_writable(obj));
     obj->serial.uart->SCFTDR = c;
     serial_put_done(obj);
+    while ((obj->serial.uart->SCFSR & 0x40) == 0); // Wait TEND = 1
 }
 
 static void serial_put_done(serial_t *obj)

Original file line number	Diff line number	Diff line change
`@@ -592,6 +592,7 @@ void serial_putc(serial_t *obj, int c) {`
`592`	`592`	`while (!serial_writable(obj));`
`593`	`593`	`obj->serial.uart->SCFTDR = c;`
`594`	`594`	`serial_put_done(obj);`
	`595`	`+ while ((obj->serial.uart->SCFSR & 0x40) == 0); // Wait TEND = 1`
`595`	`596`	`}`
`596`	`597`
`597`	`598`	`static void serial_put_done(serial_t *obj)`