tools/lib/atusb.c: added SRAM access to atusb driver

- tools/atrf-proxy/PROTOCOL: documented new commands GETRAM and SETRAM
  for SRAM access
- tools/atrf-proxy/atrf-proxy.c (cmd_two, cmd_more): added "setram"
  command
- tools/atrf-proxy/atrf-proxy.c (cmd_more): added "getram" command
- tools/lib/atnet.c (atnet_sram_write, atnet_sram_read): SRAM access
  functions
- tools/lub/atnet.c (atnet_driver): added new functions to driver
  operations

tools/atrf-proxy/PROTOCOL

@@ -48,6 +48,14 @@ READ
 +length raw-data
 -message
 
+SETRAM addr value
++[comment]
+-message
+
+GETRAM addr
++value
+-message
+
 POLL
 +0|1
 -message

tools/atrf-proxy/atrf-proxy.c

@@ -103,6 +103,19 @@ static int cmd_two(struct atrf_dsc *dsc, struct netio *netio, const char *cmd)
 			return netio_printf(netio, "-I/O error\n");
 		return netio_printf(netio, "+\n");
 	}
+	if (!strcasecmp(cmd, "setram")) {
+		int val;
+
+		val = get_num(netio, 1, &ret);
+		if (val < 0)
+			return ret;
+		if (val > 255)
+			return netio_printf(netio, "-bad argument\n");
+		atrf_sram_write(dsc, n, val);
+		if (atrf_error(dsc))
+			return netio_printf(netio, "-I/O error\n");
+		return netio_printf(netio, "+\n");
+	}
 	abort();
 }
 
@@ -113,6 +126,8 @@ static int cmd_more(struct atrf_dsc *dsc, struct netio *netio, const char *cmd)
 
 	if (!strcasecmp(cmd, "set"))
 		return cmd_two(dsc, netio, cmd);
+	if (!strcasecmp(cmd, "setram"))
+		return cmd_two(dsc, netio, cmd);
 	if (!strcasecmp(cmd, "write"))
 		return cmd_two(dsc, netio, cmd);
 
@@ -144,6 +159,16 @@ static int cmd_more(struct atrf_dsc *dsc, struct netio *netio, const char *cmd)
 			return netio_printf(netio, "-I/O error\n");
 		return netio_printf(netio, "+0x%02x\n", res);
 	}
+	if (!strcasecmp(cmd, "getram")) {
+		uint8_t res;
+
+		if (n > 255)
+			return netio_printf(netio, "-bad argument\n");
+		res = atrf_sram_read(dsc, n);
+		if (atrf_error(dsc))
+			return netio_printf(netio, "-I/O error\n");
+		return netio_printf(netio, "+0x%02x\n", res);
+	}
 	return netio_printf(netio, "-unrecognized command\n");
 }
 

tools/lib/atnet.c

@@ -402,6 +402,42 @@ fail:
 }
 
 
+/* ----- SRAM access ------------------------------------------------------- */
+
+
+static void atnet_sram_write(void *handle, uint8_t addr, uint8_t value)
+{
+	struct atnet_dsc *dsc = handle;
+
+	if (dsc->error)
+		return;
+	if (dialog(dsc, "SETRAM 0x%02x 0x%02x", addr, value) < 0)
+		dsc->error = 1;
+}
+
+
+static uint8_t atnet_sram_read(void *handle, uint8_t addr)
+{
+	struct atnet_dsc *dsc = handle;
+	unsigned long value;
+	char *end;
+
+	if (dsc->error)
+		return;
+	if (dialog(dsc, "GETRAM 0x%02x", addr) < 0) {
+		dsc->error = 1;
+		return 0;
+	}
+	value = strtoul(dsc->reply+1, &end, 0);
+	if (*end || value > 255) {
+		fprintf(stderr, "invalid response \"%s\"\n", dsc->reply+1);
+		dsc->error = 1;
+		return 0;
+	}
+	return value;
+}
+
+
 /* ----- RF interrupt ------------------------------------------------------ */
 
 
@@ -457,5 +493,7 @@ struct atrf_driver atnet_driver = {
 	.reg_read	= atnet_reg_read,
 	.buf_write	= atnet_buf_write,
 	.buf_read	= atnet_buf_read,
+	.sram_write	= atnet_sram_write,
+	.sram_read	= atnet_sram_read,
 	.interrupt	= atnet_interrupt,
 };