web: show the chip temperature in the System page

The row sits between Hardware and Flash. The firmware sends the formatted string
rather than the raw register, since the System table prints its values as they
arrive.

Costs 186 bytes in BANK1.

html/app.js

@@ -15,7 +15,7 @@ c_full:"full",c_half:"half",c_devices:"devices",c_yes:"yes",c_no:"no",
 d_ports:"Ports",d_ports_h:"click a port for details",d_system:"System",d_traffic:"Traffic",
 d_traffic_h:"packets/s, live",d_txpps:"TX pps",d_rxpps:"RX pps",d_txbad:"TX bad",d_rxbad:"RX bad",
 i_host:"Hostname",i_ip:"IP address",i_mask:"Netmask",i_gw:"Gateway",i_mac:"MAC",i_fw:"Firmware",
-i_built:"Built",i_hw:"Hardware",i_flash:"Flash",i_syslog:"Syslog",
+i_built:"Built",i_hw:"Hardware",i_temp:"Temperature",i_flash:"Flash",i_syslog:"Syslog",
 p_state:"State",p_disabled:"disabled",p_up:"up",p_txgb:"TX good / bad",p_rxgb:"RX good / bad",
 p_pkts:"pkts",p_module:"Module",p_temp:"Temperature",p_vcc:"Vcc",p_txbias:"TX bias",p_txpower:"TX power",
 p_rxpower:"RX power",p_txfault:"TX fault",p_txdis:"TX disabled",p_rxlos:"RX LOS",p_adv:"Advertising",
@@ -126,7 +126,7 @@ c_full:"全二重",c_half:"半二重",c_devices:"デバイス",c_yes:"はい",c_
 d_ports:"ポート",d_ports_h:"ポートをクリックすると詳細を表示",d_system:"システム",d_traffic:"トラフィック",
 d_traffic_h:"パケット/秒、リアルタイム",d_txpps:"TX pps",d_rxpps:"RX pps",d_txbad:"TX 異常",d_rxbad:"RX 異常",
 i_host:"ホスト名",i_ip:"IP アドレス",i_mask:"ネットマスク",i_gw:"ゲートウェイ",i_mac:"MAC",i_fw:"ファームウェア",
-i_built:"ビルド日",i_hw:"ハードウェア",i_flash:"フラッシュ",i_syslog:"Syslog",
+i_built:"ビルド日",i_hw:"ハードウェア",i_temp:"温度",i_flash:"フラッシュ",i_syslog:"Syslog",
 p_state:"状態",p_disabled:"無効",p_up:"アップ",p_txgb:"TX 正常 / 異常",p_rxgb:"RX 正常 / 異常",
 p_pkts:"pkts",p_module:"モジュール",p_temp:"温度",p_vcc:"電圧",p_txbias:"TX バイアス",p_txpower:"TX 電力",
 p_rxpower:"RX 電力",p_txfault:"TX 障害",p_txdis:"TX 無効",p_rxlos:"RX 信号ロス",p_adv:"アドバタイズ",
@@ -237,7 +237,7 @@ c_full:"全双工",c_half:"半双工",c_devices:"台设备",c_yes:"是",c_no:"
 d_ports:"端口",d_ports_h:"点击端口查看详情",d_system:"系统",d_traffic:"流量",
 d_traffic_h:"包/秒，实时",d_txpps:"TX pps",d_rxpps:"RX pps",d_txbad:"TX 错误",d_rxbad:"RX 错误",
 i_host:"主机名",i_ip:"IP 地址",i_mask:"子网掩码",i_gw:"网关",i_mac:"MAC",i_fw:"固件",
-i_built:"构建日期",i_hw:"硬件",i_flash:"Flash",i_syslog:"Syslog",
+i_built:"构建日期",i_hw:"硬件",i_temp:"温度",i_flash:"Flash",i_syslog:"Syslog",
 p_state:"状态",p_disabled:"已禁用",p_up:"已连接",p_txgb:"TX 正常 / 错误",p_rxgb:"RX 正常 / 错误",
 p_pkts:"个包",p_module:"模块",p_temp:"温度",p_vcc:"供电电压",p_txbias:"TX 偏置电流",p_txpower:"TX 光功率",
 p_rxpower:"RX 光功率",p_txfault:"TX 故障",p_txdis:"TX 禁用",p_rxlos:"RX 信号丢失",p_adv:"通告能力",
@@ -680,7 +680,7 @@ function portDetail(i){
 function renderInfo(){
   var m=[["i_host","hostname"],["i_ip","ip_address"],["i_mask","ip_netmask"],
     ["i_gw","ip_gateway"],["i_mac","mac_address"],["i_fw","sw_ver"],["i_built","build_date"],
-    ["i_hw","hw_ver"],["i_flash","flash_size"],["i_syslog","syslog_server"]];
+    ["i_hw","hw_ver"],["i_temp","chip_temp"],["i_flash","flash_size"],["i_syslog","syslog_server"]];
   var tb=$("sysinfo");tb.innerHTML="";
   m.forEach(function(r){
     var v=S.info[r[1]];

httpd/page_impl.c

@@ -117,6 +117,23 @@ void string_to_html(__code char *s)
 	while (*s) char_to_html(*s++);
 }
 
+static void temp_to_html(void)
+{
+	int16_t v;
+
+	reg_read(RTL837X_TM_RESULT);
+	v = SFR_DATA_U16;
+	if (v < 0) {
+		char_to_html('-');
+		v = -v;
+	}
+	itoa_html(v >> 7);
+	char_to_html('.');
+	itoa_html(((v & 0x7f) * 10) >> 7);
+	char_to_html(' ');
+	char_to_html('C');
+}
+
 uint16_t stat_content(void)
 {
 	dbg_string("stat_content called\n");
@@ -262,6 +279,8 @@ void send_basic_info(void)
 	slen += strtox(outbuf + slen, BUILD_DATE);
 	slen += strtox(outbuf + slen, "\",\"hw_ver\":\"");
 	slen += strtox(outbuf + slen, machine.machine_name);
+	slen += strtox(outbuf + slen, "\",\"chip_temp\":\"");
+	temp_to_html();
 	slen += strtox(outbuf + slen, "\",\"flash_size\":\"");
 	string_to_html(get_flash_size_str());