firmware v0.8.1

Makefile

@@ -5,9 +5,10 @@ all:
 	cd src/pico_build; make -j4
 	@echo "build pico_w"
 	mkdir -p src/pico_w_build
-	cd src/pico_w_build; make -j4
+	cd src/pico_w_build; make -
+#see fsfe reuse tool (https://git.fsfe.org/reuse/tool)
 	@echo "reuse (license) check"
-	reuse lint
+	pipx run reuse lint
 
 # rebuild
 rebuild:
@@ -19,13 +20,3 @@ rebuild:
 	rm -rf src/pico_w_build
 	mkdir src/pico_w_build
 	cd src/pico_w_build; cmake .. -DPICO_BOARD=pico_w; make -j4
-
-#install fsfe reuse tool (https://git.fsfe.org/reuse/tool)
-# pre-conditions:
-# - Python 3.6+
-# - pip
-# install pre-conditions in Debian like linux distros:
-# - sudo apt install python3
-# - sudo apt install python3-pip
-reuse:
-	pip3 install --user --upgrade reuse

README.md

@@ -49,12 +49,14 @@ To mitigate some of the function setting issues the pico-cs command station is o
 - Connect the Raspberry Pi Pico to your PC via an USB cable
 - [Build](#build) the pico-cs firmware
 - Install firmware (Pico: cs.uf2, Pico W: cs_w.uf2) via BOOTSEL mode (see [Raspberry Pi Pico documentation](https://www.raspberrypi.com/documentation/microcontrollers/raspberry-pi-pico.html))
-- On macOS Ventura copying via drag&drop in Finder was broken but seems to work again with version 13.1 - anyway, copying the file via command line is always an option:
+- On macOS Ventura copying via drag&drop in Finder was broken but seems to work again with version 13.1 - anyway, copying the file via the command line is always an option:
 ```
 cp -X cs.uf2 /Volumes/RPI-RP2/
 cp -X cs_w.uf2 /Volumes/RPI-RP2/
 ``` 
-- Use a terminal emulation tool supporting serial over USB communication like the Serial Monotor of the [Arduino IDE](https://www.arduino.cc/en/software)
+- Use a terminal emulation tool supporting serial over USB communication like
+  - the Serial Monotor of the [Arduino IDE](https://www.arduino.cc/en/software) or
+  - the [Serial Monitor](https://marketplace.visualstudio.com/items?itemName=ms-vscode.vscode-serial-monitor) extension of [Visual Studio Code](https://code.visualstudio.com/)
 - Set the baud rate to 115200 and \<CR\> (Carriage Return) as command / message ending character
 - The firmware uses the following Raspberry Pi Pico GPIOs:
   - GP2: DCC signal output
@@ -113,15 +115,15 @@ File <path to firmware>/firmware/src/pico_build/cs.uf2:
 
 Program Information
  name:          cs
- version:       v0.8.0
+ version:       <firmware version>
  web site:      https://github.com/pico-cs
  description:   pico-cs DCC command station
  features:      Refresh buffer size 128
                 double reset -> BOOTSEL
                 UART stdin / stdout
                 USB stdin / stdout
- binary start:  0x10000000
- binary end:    0x1000e534
+ binary start:  <start address>
+ binary end:    <end address>
 
 Fixed Pin Information
  0:   UART0 TX
@@ -133,21 +135,21 @@ Fixed Pin Information
  25:  On-board LED
 
 Build Information
- sdk version:       1.4.0
+ sdk version:       <sdk version>
  pico_board:        pico
  boot2_name:        boot2_w25q080
- build date:        Feb  6 2023
+ build date:        <build date>
  build attributes:  Release
 ```
 
 ```
 ./picotool info -a <path to firmware>/firmware/src/pico_w_build/cs_w.uf2
 
-File ../../pico-cs/firmware/src/pico_w_build/cs_w.uf2:
+File  <path to firmware>/firmware/src/pico_w_build/cs_w.uf2:
 
 Program Information
  name:          cs_w
- version:       v0.8.0
+ version:       <firmware version>
  web site:      https://github.com/pico-cs
  description:   pico-cs DCC command station
  features:      WiFi SSID MyWiFiSSID password MyWiFiPassword
@@ -156,8 +158,8 @@ Program Information
                 double reset -> BOOTSEL
                 UART stdin / stdout
                 USB stdin / stdout
- binary start:  0x10000000
- binary end:    0x10055c2c
+ binary start:  <start address>
+ binary end:    <end address>
 
 Fixed Pin Information
  0:  CYW43 LED, UART0 TX
@@ -168,10 +170,10 @@ Fixed Pin Information
  5:  Main track: DCC signal power  (inverted)
 
 Build Information
- sdk version:       1.4.0
+ sdk version:       <sdk version>
  pico_board:        pico_w
  boot2_name:        boot2_w25q080
- build date:        Feb  6 2023
+ build date:        <build date>
  build attributes:  Release
 ```
 

src/board.c

@@ -16,8 +16,6 @@ static board_type_t board_get_type() {
 }
 
 void board_init_common(board_t *board, writer_t *logger) {
-    mutex_init(&(board->mu));
-
     board->logger = logger;
 
     // unique board id    

src/board.h

@@ -1,7 +1,6 @@
 #ifndef _BOARD_H
 #define _BOARD_H
 
-#include "pico/mutex.h"
 #include "pico/unique_id.h"
 
 #include "common.h"
@@ -15,7 +14,6 @@ typedef enum {
 #define MAC_SIZE_BYTES 6
 
 typedef struct {
-    mutex_t mu;
     writer_t *logger;
     board_type_t type;
     char id[PICO_UNIQUE_BOARD_ID_SIZE_BYTES*3];

src/board_pico.c

@@ -23,15 +23,6 @@ void board_deinit(board_t *board) {
     board_set_led(board, false);
 }
 
-void board_set_led(board_t *board, bool v) {
-    mutex_enter_blocking(&board->mu);
-    gpio_put(PICO_DEFAULT_LED_PIN, v);
-    mutex_exit(&board->mu);
-}
+void board_set_led(board_t *board, bool v) {gpio_put(PICO_DEFAULT_LED_PIN, v);}
 
-bool board_get_led(board_t *board) {
-    mutex_enter_blocking(&board->mu);
-    bool rv = gpio_get(PICO_DEFAULT_LED_PIN);
-    mutex_exit(&board->mu);
-    return rv;
-}
+bool board_get_led(board_t *board) {return gpio_get(PICO_DEFAULT_LED_PIN);}

src/board_pico_w.c

@@ -30,19 +30,7 @@ bool board_init(board_t *board, writer_t *logger) {
     uint8_t mac[MAC_SIZE_BYTES];
     cyw43_wifi_get_mac(&cyw43_state, CYW43_ITF_STA, mac);
     uint8_hex_to_string(mac, MAC_SIZE_BYTES, board->mac, ':');
-
-    bool connected = false;
 
-    while (!connected) {
-
-        write_eventf(logger, "wifi: connecting MAC: %s ...", board->mac);
-        if (cyw43_arch_wifi_connect_timeout_ms(WIFI_SSID, WIFI_PASSWORD, CYW43_AUTH_WPA2_AES_PSK, 30000)) {
-            write_event(logger, "wifi: failed to connect");
-        } else {
-            write_event(logger, "wifi: connected");
-            return true;
-        }
-    }
     return true;
 }
 
@@ -51,15 +39,6 @@ void board_deinit(board_t *board) {
     cyw43_arch_deinit();
 }
 
-void board_set_led(board_t *board, bool v) { 
-    mutex_enter_blocking(&board->mu);
-    cyw43_arch_gpio_put(CYW43_WL_GPIO_LED_PIN, v);
-    mutex_exit(&board->mu);
-}
+void board_set_led(board_t *board, bool v) {cyw43_arch_gpio_put(CYW43_WL_GPIO_LED_PIN, v);}
 
-bool board_get_led(board_t *board) {
-    mutex_enter_blocking(&board->mu);
-    bool rv = cyw43_arch_gpio_get(CYW43_WL_GPIO_LED_PIN);
-    mutex_exit(&board->mu);
-    return rv;
-}
+bool board_get_led(board_t *board) {return cyw43_arch_gpio_get(CYW43_WL_GPIO_LED_PIN);}

src/cmd.c

@@ -100,6 +100,10 @@ static cmd_rc_t cmd_mt_enabled(cmd_t *cmd, int num_prm, reader_t *reader, writer
         break;
     case 2:
         if (!parse_bool(reader_get_prm(reader, 1), &on)) return CMD_RC_INVPRM;
+
+        // switch led if CV flag is set 
+        if (cfg_get_cv(CFG_MT_CFG)&CFG_MT_CFG_LED) board_set_led(cmd->board, on);
+
         cfg_set_mt_enabled(on);
         break;
     }

src/core.c

@@ -2,7 +2,6 @@
 
 // command
 static const int core_num_entry_queue  = 1;
-static const bool core_dummy_data = true; 
 
 void core_init(core_t *core) {
     queue_init(&core->q0, sizeof(bool), core_num_entry_queue);

src/cs.c

@@ -10,26 +10,26 @@
 #include "mt.h"
 #include "loop.h"
 
-#define PROGRAM_VERSION     "v0.8.0"
+#define PROGRAM_VERSION     "v0.8.1"
 #define PROGRAM_DESCRIPTION "pico-cs DCC command station"
 #define PROGRAM_URL         "https://github.com/pico-cs"
 
 /*
     shared variables between cores
 */
-core_t  core;           // core (inter core communication)
-board_t board;          // board (shared for led)
-rbuf_t  rbuf;           // refresh buffer
-cmdq_t  cmdq;           // command queue (multicore)
-mt_t    mt;             // main track
+core_t core;        // core (inter core communication)
+rbuf_t rbuf;        // refresh buffer
+cmdq_t cmdq;        // command queue (multicore)
 
 void core1_main() {
     multicore_lockout_victim_init();    // prepare lockout (suspend) of core 1
 
+    mt_t mt; // main track
+
     dcc_tx_pio_t tx_pio;
     dcc_tx_pio_init(&tx_pio);
 
-    mt_init(&mt, &tx_pio, &board, &rbuf, &cmdq);
+    mt_init(&mt, &tx_pio, &rbuf, &cmdq);
 
     core_signal_start1(&core);          // signal core0 that core1 is started
 
@@ -39,10 +39,10 @@ void core1_main() {
     }
 }
 
-static const uint32_t wait_ms = 200;
-
 int main() {
 
+    board_t board;
+
     bi_decl(bi_program_version_string(PROGRAM_VERSION));
     bi_decl(bi_program_description(PROGRAM_DESCRIPTION));
     bi_decl(bi_program_url(PROGRAM_URL));
@@ -84,8 +84,8 @@ int main() {
     loop(&cmd, &usb_reader, &usb_writer); // finally loop until reboot
 
     // reboot
-    core_wait_stop1(&core);     // wait for core1 to be stopped
+    core_wait_stop1(&core);             // wait for core1 to be stopped
     board_deinit(&board);
-    sleep_ms(wait_ms);          // wait for write output
-    watchdog_enable(0, true);   // reboot immediately
+    uart_default_tx_wait_blocking();    // wait for write output
+    watchdog_enable(0, true);           // reboot immediately
 }

src/loop_pico_w.c

@@ -4,11 +4,40 @@
 #include "loop.h"
 #include "io.h"
 
-void loop(cmd_t *cmd, reader_t *usb_reader, writer_t *usb_writer) {
+static bool is_wifi_connected(cmd_t *cmd, writer_t *logger, bool log_success) {
+    switch (cyw43_wifi_link_status(&cyw43_state,CYW43_ITF_STA)) {
+    case CYW43_LINK_DOWN:
+        write_event(logger, "wifi: down"); return false;
+    case CYW43_LINK_JOIN:
+        if (log_success) write_event(logger, "wifi: connected");
+        return true;
+    case CYW43_LINK_FAIL:
+        write_event(logger, "wifi: connection failed"); return false;
+    case CYW43_LINK_NONET:
+        write_event(logger, "wifi: no matching SSID found"); return false;
+    case CYW43_LINK_BADAUTH:    
+        write_event(logger, "wifi: authenticatation failure"); return false;
+    default:
+        write_event(logger, "wifi: unknown error"); return false;
+    } 	
+}
+
+static const int num_connect_retry  = 5;
+static const int connect_timeout_ms = 30000;    // 30 sec
+static const int check_wifi_int_us  = 10000000; // 10 sec  
 
+static bool wifi_connect(cmd_t *cmd, writer_t *logger) {
+    write_eventf(logger, "wifi: connecting MAC: %s ...", cmd->board->mac);
+    for (int i=0; i < num_connect_retry; i++) {
+        cyw43_arch_wifi_connect_timeout_ms(WIFI_SSID, WIFI_PASSWORD, CYW43_AUTH_WPA2_AES_PSK, connect_timeout_ms);
+        if (is_wifi_connected(cmd, logger, true)) return true;
+    }
+    return false;
+}
+
+void loop(cmd_t *cmd, reader_t *usb_reader, writer_t *usb_writer) {
     tcp_server_t server;
     tcp_server_init(&server, usb_writer);
-    tcp_server_open(&server);
 
     writer_t tcp_writer;
     writer_init(&tcp_writer, &server, &tcp_server_write);
@@ -17,11 +46,25 @@ void loop(cmd_t *cmd, reader_t *usb_reader, writer_t *usb_writer) {
 
     byte usb_buf[PROT_BUFFER_SIZE];
 
+    if (wifi_connect(cmd, usb_writer)) tcp_server_open(&server);
+
+    absolute_time_t time_from = get_absolute_time();
+
     while (true) {
 
         server.recv_len = 0;
 
         cyw43_arch_poll();
+
+        if (absolute_time_diff_us(time_from, get_absolute_time()) >= check_wifi_int_us) {
+            if (!is_wifi_connected(cmd, usb_writer, false)) {
+                if (wifi_connect(cmd, usb_writer)) {
+                    if (server.open) tcp_server_close(&server);
+                    tcp_server_open(&server);
+                };
+            };
+            time_from = get_absolute_time();
+        }
 
         if (reader_read_frame(&tcp_reader, server.buffer_recv, server.recv_len)) {
             if (!cmd_dispatch(cmd, &tcp_reader, &tcp_writer)) break;

src/mt.c

@@ -71,29 +71,22 @@ static void mt_refresh_dcc(mt_t *mt, bool one_entry, cmdq_in_t *in) {
 static void mt_set_enabled(mt_t *mt, bool enabled) {
     mt->enabled = enabled;
     if (enabled) { 
-        // switch led on if CV flag is set 
-        if (cfg_get_cv(CFG_MT_CFG)&CFG_MT_CFG_LED) board_set_led(mt->board, true);
-
         // when switching on set whether def or bidi depending on CV
         if (cfg_get_cv(CFG_MT_CFG)&CFG_MT_CFG_BIDI) {
             mt->tx_sm = &mt->tx_pio->tx_sm_bidi;
         } else {
             mt->tx_sm = &mt->tx_pio->tx_sm_def;
         }
-    } else {
-        // switch led off if CV flag is set 
-        if (cfg_get_cv(CFG_MT_CFG)&CFG_MT_CFG_LED) board_set_led(mt->board, false);
     }
     dcc_tx_sm_set_enabled(mt->tx_sm, enabled);
 }
 
-void mt_init(mt_t *mt, dcc_tx_pio_t *tx_pio, board_t *board, rbuf_t *rbuf, cmdq_t *cmdq) {
+void mt_init(mt_t *mt, dcc_tx_pio_t *tx_pio, rbuf_t *rbuf, cmdq_t *cmdq) {
     mt->enabled = false;  // start not enabled
 
     mt->tx_pio   = tx_pio;
     mt->tx_sm    = &tx_pio->tx_sm_def;
 
-    mt->board = board;
     mt->rbuf  = rbuf;
     mt->cmdq  = cmdq;
 

src/mt.h

@@ -10,13 +10,12 @@ typedef struct {
     bool enabled;
     dcc_tx_pio_t *tx_pio;
     dcc_tx_sm_t *tx_sm;
-    board_t *board;
     rbuf_t *rbuf;
     cmdq_t *cmdq;
 } mt_t; // main track
 
 // public interface
-void mt_init(mt_t *mt, dcc_tx_pio_t *tx_pio, board_t *board, rbuf_t *rbuf, cmdq_t *cmdq);
+void mt_init(mt_t *mt, dcc_tx_pio_t *tx_pio, rbuf_t *rbuf, cmdq_t *cmdq);
 void mt_dispatch(mt_t *mt);
 
 #endif