X-Git-Url: https://sigrok.org/gitweb/?a=blobdiff_plain;f=src%2Fhardware%2Fcem-dt-885x%2Fprotocol.c;h=00dbd0c447f2bc595e7de4f672250aa1de046594;hb=329733d92c5004f0fe308eff26b9537fded2cdf3;hp=19e083062c69331230589be10ab7e6ec34bab4e2;hpb=155b680da482cea2381becb73c51cfb838bff31e;p=libsigrok.git

diff --git a/src/hardware/cem-dt-885x/protocol.c b/src/hardware/cem-dt-885x/protocol.c
index 19e08306..00dbd0c4 100644
--- a/src/hardware/cem-dt-885x/protocol.c
+++ b/src/hardware/cem-dt-885x/protocol.c
@@ -21,7 +21,7 @@
 #include "protocol.h"
 
 /* Length of expected payload for each token. */
-static int token_payloads[][2] = {
+static const int token_payloads[][2] = {
 	{ TOKEN_WEIGHT_TIME_FAST, 0 },
 	{ TOKEN_WEIGHT_TIME_SLOW, 0 },
 	{ TOKEN_HOLD_MAX, 0 },
@@ -385,7 +385,7 @@ SR_PRIV int cem_dt_885x_receive_data(int fd, int revents, void *cb_data)
 	devc = sdi->priv;
 	serial = sdi->conn;
 	if (revents == G_IO_IN) {
-		if (serial_read(serial, &c, 1) != 1)
+		if (serial_read_nonblocking(serial, &c, 1) != 1)
 			return TRUE;
 		process_byte(sdi, c, TRUE);
 
@@ -396,7 +396,7 @@ SR_PRIV int cem_dt_885x_receive_data(int fd, int revents, void *cb_data)
 			} else {
 				/* Tell device to start transferring from memory. */
 				cmd = CMD_TRANSFER_MEMORY;
-				serial_write(serial, &cmd, 1);
+				serial_write_nonblocking(serial, &cmd, 1);
 			}
 		}
 	}
@@ -404,7 +404,6 @@ SR_PRIV int cem_dt_885x_receive_data(int fd, int revents, void *cb_data)
 	return TRUE;
 }
 
-
 static int wait_for_token(const struct sr_dev_inst *sdi, int8_t *tokens, int timeout)
 {
 	struct dev_context *devc;
@@ -418,7 +417,7 @@ static int wait_for_token(const struct sr_dev_inst *sdi, int8_t *tokens, int tim
 	devc->state = ST_INIT;
 	start_time = g_get_monotonic_time() / 1000;
 	while (TRUE) {
-		if (serial_read(serial, &c, 1) != 1)
+		if (serial_read_nonblocking(serial, &c, 1) != 1)
 			/* Device might have gone away. */
 			return SR_ERR;
 		process_byte(sdi, c, FALSE);
@@ -453,7 +452,7 @@ static int cem_dt_885x_toggle(const struct sr_dev_inst *sdi, uint8_t cmd,
 	 * only thing to do is wait for the token that will confirm
 	 * whether the command worked or not, and resend if needed. */
 	while (TRUE) {
-		if (serial_write(serial, (const void *)&cmd, 1) != 1)
+		if (serial_write_nonblocking(serial, (const void *)&cmd, 1) != 1)
 			return SR_ERR;
 		if (wait_for_token(sdi, tokens, timeout) == SR_ERR)
 			return SR_ERR;
@@ -811,20 +810,14 @@ SR_PRIV int cem_dt_885x_power_off(const struct sr_dev_inst *sdi)
 
 	serial = sdi->conn;
 
-	/* Reopen the port in non-blocking mode, so we can properly
-	 * detect when the device stops communicating. */
-	serial_close(serial);
-	if (serial_open(serial, SERIAL_RDWR | SERIAL_NONBLOCK) != SR_OK)
-		return SR_ERR;
-
 	cmd = CMD_TOGGLE_POWER_OFF;
 	while (TRUE) {
 		serial_flush(serial);
-		if (serial_write(serial, (const void *)&cmd, 1) != 1)
+		if (serial_write_nonblocking(serial, (const void *)&cmd, 1) != 1)
 			return SR_ERR;
 		/* It never takes more than 23ms for the next token to arrive. */
 		g_usleep(25 * 1000);
-		if (serial_read(serial, &c, 1) != 1)
+		if (serial_read_nonblocking(serial, &c, 1) != 1)
 			/* Device is no longer responding. Good! */
 			break;
 	}