sipo finished

comm/messages.c

@@ -71,6 +71,7 @@ static void settings_bulkread_cb(BulkRead *bulk, uint32_t chunk, uint8_t *buffer
     if (bulk->offset == 0) iw_begin();
 
     IniWriter iw = iw_init((char *)buffer, bulk->offset, chunk);
+    iw.tag = 1;
     settings_build_units_ini(&iw);
 }
 
@@ -85,7 +86,7 @@ static TF_Result lst_ini_export(TinyFrame *tf, TF_Msg *msg)
     assert_param(bulk != NULL);
 
     bulk->frame_id = msg->frame_id;
-    bulk->len = iw_measure_total(settings_build_units_ini);
+    bulk->len = iw_measure_total(settings_build_units_ini, 1);
     bulk->read = settings_bulkread_cb;
     bulk->userdata = NULL;
 

framework/settings.c

@@ -229,7 +229,6 @@ static void gex_file_preamble(IniWriter *iw, const char *filename)
     iw_hdr_comment(iw, filename);
     iw_hdr_comment(iw, "GEX v%s on %s", GEX_VERSION, GEX_PLATFORM);
     iw_hdr_comment(iw, "built %s at %s", __DATE__, __TIME__);
-    iw_cmt_newline(iw);
 }
 
 /** Generate a config file header (write instructions) */
@@ -237,12 +236,15 @@ static void ini_preamble(IniWriter *iw, const char *filename)
 {
     gex_file_preamble(iw, filename);
 
-    iw_comment(iw, "Overwrite this file to change settings.");
-    #if PLAT_LOCK_BTN
-        iw_comment(iw, "Press the LOCK button to save them to Flash.");
-    #else
-        iw_comment(iw, "Close the LOCK jumper to save them to Flash.");
-    #endif
+    if (iw->tag == 0) { // tag 1 is set when exporting via the API
+        iw_cmt_newline(iw);
+        iw_comment(iw, "Overwrite this file to change settings.");
+        #if PLAT_LOCK_BTN
+            iw_comment(iw, "Press the LOCK button to save them to Flash.");
+        #else
+            iw_comment(iw, "Close the LOCK jumper to save them to Flash.");
+        #endif
+    }
 }
 
 // --- UNITS.INI ---
@@ -284,7 +286,7 @@ extern void plat_print_system_pinout(IniWriter *iw);
 void settings_build_pinout_txt(IniWriter *iw)
 {
     gex_file_preamble(iw, "PINOUT.TXT");
-
+    iw_cmt_newline(iw);
     rsc_print_all_available(iw);
     ureg_print_unit_resources(iw);
     plat_print_system_pinout(iw);

framework/unit_registry.c

@@ -340,19 +340,26 @@ bool ureg_finalize_all_init(void)
         } else {
             pUnit->status = pUnit->driver->init(pUnit);
             if (pUnit->status != E_SUCCESS) {
-                dbg("!!! error initing unit %s: %s", pUnit->name,
-                    error_get_message(pUnit->status));
+                dbg("!!! error initing unit %s: %s", pUnit->name, error_get_message(pUnit->status));
             }
 
             // try to assign unique callsigns
-            // FIXME this is wrong, sometimes leads to duplicate CS
             if (pUnit->callsign == 0) {
-                pUnit->callsign = callsign++;
-            }
-            else {
-                if (pUnit->callsign >= callsign) {
-                    callsign = (uint8_t) (pUnit->callsign + 1);
-                }
+                // this is very inefficient but should be reliable
+                bool change = false;
+                do {
+                    UlistEntry *xli = ulist_head;
+                    while (xli != NULL) {
+                        if (xli->unit.callsign != 0) {
+                            if (xli->unit.callsign == callsign) {
+                                change = true;
+                                callsign++;
+                            }
+                        }
+                        xli = xli->next;
+                    }
+                } while (change && callsign < 255);
+                pUnit->callsign = callsign;
             }
         }
 
@@ -398,8 +405,9 @@ void ureg_build_ini(IniWriter *iw)
 
     // Unit list
     iw_section(iw, "UNITS");
-    iw_comment(iw, "Create units by adding their names next to a type (e.g. PIN=A,B),");
+    iw_comment(iw, "Create units by adding their names next to a type (e.g. DO=A,B),");
     iw_comment(iw, "remove the same way. Reload to update the unit sections below.");
+    iw_cmt_newline(iw);
 
     // This could certainly be done in some more efficient way ...
     re = ureg_head;
@@ -412,7 +420,6 @@ void ureg_build_ini(IniWriter *iw)
 
         const UnitDriver *const pDriver = re->driver;
 
-        iw_cmt_newline(iw);
         iw_comment(iw, pDriver->description);
         iw_string(iw, pDriver->name);
         iw_string(iw, "=");

units/sipo/_sipo_api.c

@@ -30,7 +30,7 @@ static void send_pulse(bool pol, GPIO_TypeDef *port, uint32_t ll)
 
 #pragma GCC push_options
 #pragma GCC optimize ("O2")
-error_t UU_SIPO_Write(Unit *unit, const uint8_t *buffer, uint16_t buflen)
+error_t UU_SIPO_Write(Unit *unit, const uint8_t *buffer, uint16_t buflen, uint16_t terminal_data)
 {
     CHECK_TYPE(unit, &UNIT_SIPO);
     struct priv *priv = unit->data;
@@ -65,6 +65,11 @@ error_t UU_SIPO_Write(Unit *unit, const uint8_t *buffer, uint16_t buflen)
         }
     }
 
+    // load the final data - this may be used by some other circuitry or
+    // simply to rest the lines at a defined known level
+    uint16_t spread = pinmask_spread(terminal_data, mask);
+    priv->data_port->BSRR = spread | (((~spread) & mask) << 16);
+
     send_pulse(priv->store_pol, priv->store_port, priv->store_ll);
     return E_SUCCESS;
 }

units/sipo/_sipo_internal.h

@@ -79,9 +79,10 @@ void USIPO_deInit(Unit *unit);
  * @param unit
  * @param buffer - buffer of data to send
  * @param buflen - number of bytes in the buffer
+ * @param terminal_data - data to set before sending the store pulse (final data lines state, will not appear in the SIPOs)
  * @return success
  */
-error_t UU_SIPO_Write(Unit *unit, const uint8_t *buffer, uint16_t buflen);
+error_t UU_SIPO_Write(Unit *unit, const uint8_t *buffer, uint16_t buflen, uint16_t terminal_data);
 
 /**
  * Direct access to the output data pins (may be useful for debugging, or circuits that use them

units/sipo/_sipo_settings.c

@@ -103,11 +103,11 @@ void USIPO_writeIni(Unit *unit, IniWriter *iw)
 {
     struct priv *priv = unit->data;
 
-    iw_comment(iw, "Shift pin & its active edge");
+    iw_comment(iw, "Shift pin & its active edge (1-rising,0-falling)");
     iw_entry(iw, "shift-pin", "%c%d", priv->shift_pname,  priv->shift_pnum);
     iw_entry(iw, "shift-pol", "%d", priv->shift_pol);
 
-    iw_comment(iw, "Store pin & its active edge (1-rising,0-falling)");
+    iw_comment(iw, "Store pin & its active edge");
     iw_entry(iw, "store-pin", "%c%d", priv->store_pname,  priv->store_pnum);
     iw_entry(iw, "store-pol", "%d", priv->store_pol);
 

units/sipo/unit_sipo.c

@@ -26,8 +26,9 @@ static error_t USIPO_handleRequest(Unit *unit, TF_ID frame_id, uint8_t command,
         case CMD_WRITE:
             {
                 uint32_t len;
+                uint16_t terminal_packed = pp_u16(pp);
                 const uint8_t *tail = pp_tail(pp, &len);
-                TRY(UU_SIPO_Write(unit, (uint8_t *) tail, (uint16_t) len));
+                TRY(UU_SIPO_Write(unit, (uint8_t *) tail, (uint16_t) len, terminal_packed));
             }
             return E_SUCCESS;
 

utils/ini_writer.c

@@ -119,9 +119,10 @@ void iw_entry(IniWriter *iw, const char *key, const char *format, ...)
     iw_newline(iw);	// one newline after entry
 }
 
-uint32_t iw_measure_total(void (*handler)(IniWriter *))
+uint32_t iw_measure_total(void (*handler)(IniWriter *), uint32_t tag)
 {
     IniWriter iw = iw_init(NULL, 0xFFFFFFFF, 1);
+    iw.tag = tag;
     iw_begin();
     handler(&iw);
     iw_end();

utils/ini_writer.h

@@ -18,6 +18,7 @@ typedef struct iniwriter_ {
     char *ptr;
     uint32_t skip;
     uint32_t count;
+    uint32_t tag; // general purpose field (used to identify for which purpose is the file being read)
 } IniWriter;
 
 /**
@@ -43,7 +44,7 @@ void iw_end(void);
  * @param count - number of bytes to write, truncate rest
  * @return structure initializer
  */
-#define iw_init(buffer, skip, count) (IniWriter){buffer, skip, count}
+#define iw_init(xbuffer, xskip, xcount) (IniWriter){.ptr=(xbuffer), .skip=(xskip), .count=(xcount)}
 
 /**
  * Try to write a buffer to the file
@@ -131,6 +132,6 @@ void iw_entry(IniWriter *iw, const char *key, const char *format, ...)
  * @param handler - function that normally writes to the writer
  * @return byte count
  */
-uint32_t iw_measure_total(void (*handler)(IniWriter *));
+uint32_t iw_measure_total(void (*handler)(IniWriter *), uint32_t tag);
 
 #endif //INIWRITER_H

vfs/vfs_user.c

@@ -73,9 +73,9 @@ void vfs_user_build_filesystem(void)
     // Setup the filesystem based on target parameters
     vfs_init(daplink_drive_name, 0/*unused "disk size"*/);
 
-    vfs_create_file("UNITS   INI", read_file_units_ini, NULL, iw_measure_total(settings_build_units_ini));
-    vfs_create_file("SYSTEM  INI", read_file_system_ini, NULL, iw_measure_total(settings_build_system_ini));
-    vfs_create_file("PINOUT  TXT", read_file_pinout_txt, NULL, iw_measure_total(settings_build_pinout_txt));
+    vfs_create_file("UNITS   INI", read_file_units_ini, NULL, iw_measure_total(settings_build_units_ini, 0));
+    vfs_create_file("SYSTEM  INI", read_file_system_ini, NULL, iw_measure_total(settings_build_system_ini, 0));
+    vfs_create_file("PINOUT  TXT", read_file_pinout_txt, NULL, iw_measure_total(settings_build_pinout_txt, 0));
 }