1-wire. Search ROM feature now optional

os/hal/include/onewire.h

@@ -67,7 +67,7 @@
 /*===========================================================================*/
 /* Driver data structures and types.                                         */
 /*===========================================================================*/
-
+#if ONEWIRE_USE_STRONG_PULLUP
 /**
  * @brief   1-wire strong pull up assert callback type.
  */
@@ -77,6 +77,7 @@ typedef void (*onewire_pullup_assert_t)(void);
  * @brief   1-wire strong pull up release callback type.
  */
 typedef void (*onewire_pullup_release_t)(void);
+#endif /* ONEWIRE_USE_STRONG_PULLUP */
 
 /**
  * @brief   1-wire read bit callback type.
@@ -97,6 +98,7 @@ typedef enum {
 #endif
 } onewire_state_t;
 
+#if ONEWIRE_USE_SEARCH_ROM
 /**
  * @brief   Search ROM procedure possible state.
  */
@@ -113,6 +115,7 @@ typedef enum {
   ONEWIRE_SEARCH_ROM_FIRST = 0,     /**< First search run.                  */
   ONEWIRE_SEARCH_ROM_NEXT = 1       /**< Next search run.                   */
 } search_iteration_t;
+#endif /* ONEWIRE_USE_SEARCH_ROM */
 
 /**
  * @brief   Driver configuration structure.
@@ -147,6 +150,7 @@ typedef struct {
 #endif
 } onewireConfig;
 
+#if ONEWIRE_USE_SEARCH_ROM
 /**
  * @brief     Search ROM registry. Contains small variables used
  *            in 'search ROM' procedure.
@@ -212,6 +216,7 @@ typedef struct {
    */
   int8_t            prev_zero_branch;
 } onewire_search_rom_t;
+#endif /* ONEWIRE_USE_SEARCH_ROM */
 
 /**
  * @brief     Onewire registry. Some small variables combined
@@ -268,10 +273,12 @@ typedef struct {
    * @brief   Pointer to I/O data buffer.
    */
   uint8_t               *buf;
+#if ONEWIRE_USE_SEARCH_ROM
   /**
    * @brief   Search ROM helper structure.
    */
   onewire_search_rom_t  search_rom;
+#endif /* ONEWIRE_USE_SEARCH_ROM */
   /**
    * @brief   Thread waiting for I/O completion.
    */
@@ -297,14 +304,16 @@ extern "C" {
   void onewireStop(onewireDriver *owp);
   bool onewireReset(onewireDriver *owp);
   void onewireRead(onewireDriver *owp, uint8_t *rxbuf, size_t rxbytes);
+  uint8_t onewireCRC(const uint8_t *buf, size_t len);
   void onewireWrite(onewireDriver *owp,
                     uint8_t *txbuf,
                     size_t txbytes,
                     systime_t pullup_time);
+#if ONEWIRE_USE_SEARCH_ROM
   size_t onewireSearchRom(onewireDriver *owp,
                           uint8_t *result,
                           size_t max_rom_cnt);
-  uint8_t onewireCRC(const uint8_t *buf, size_t len);
+#endif /* ONEWIRE_USE_SEARCH_ROM */
 #if ONEWIRE_SYNTH_SEARCH_TEST
   void _synth_ow_write_bit(onewireDriver *owp, uint8_t bit);
   uint_fast8_t _synth_ow_read_bit(void);

os/hal/src/onewire.c

@@ -84,8 +84,10 @@ static void ow_read_bit_cb(PWMDriver *pwmp, onewireDriver *owp);
 static void pwm_read_bit_cb(PWMDriver *pwmp);
 static void ow_write_bit_cb(PWMDriver *pwmp, onewireDriver *owp);
 static void pwm_write_bit_cb(PWMDriver *pwmp);
+#if ONEWIRE_USE_SEARCH_ROM
 static void ow_search_rom_cb(PWMDriver *pwmp, onewireDriver *owp);
 static void pwm_search_rom_cb(PWMDriver *pwmp);
+#endif
 
 /*===========================================================================*/
 /* Driver exported variables.                                                */
@@ -182,12 +184,14 @@ static void pwm_write_bit_cb(PWMDriver *pwmp) {
   ow_write_bit_cb(pwmp, &OWD1);
 }
 
+#if ONEWIRE_USE_SEARCH_ROM
 /**
  * @brief     PWM adapter
  */
 static void pwm_search_rom_cb(PWMDriver *pwmp) {
   ow_search_rom_cb(pwmp, &OWD1);
 }
+#endif /* ONEWIRE_USE_SEARCH_ROM */
 
 /**
  * @brief     Write bit routine.
@@ -319,6 +323,7 @@ static void ow_write_bit_cb(PWMDriver *pwmp, onewireDriver *owp) {
   owp->reg.bit++;
 }
 
+#if ONEWIRE_USE_SEARCH_ROM
 /**
  * @brief   Helper function for collision handler
  *
@@ -514,6 +519,7 @@ static void search_clean_iteration(onewire_search_rom_t *sr) {
   sr->reg.bit_buf = 0;
   sr->reg.result = ONEWIRE_SEARCH_ROM_LAST;
 }
+#endif /* ONEWIRE_USE_SEARCH_ROM */
 
 /*===========================================================================*/
 /* Driver exported functions.                                                */
@@ -755,6 +761,7 @@ void onewireWrite(onewireDriver *owp, uint8_t *txbuf,
 #endif
 }
 
+#if ONEWIRE_USE_SEARCH_ROM
 /**
  * @brief   Performs tree search on bus.
  * @note    This function does internal 1-wire reset calls every search
@@ -833,6 +840,7 @@ size_t onewireSearchRom(onewireDriver *owp, uint8_t *result,
   else
     return owp->search_rom.reg.devices_found;
 }
+#endif /* ONEWIRE_USE_SEARCH_ROM */
 
 /*
  * Include test code (if enabled).

testhal/STM32/STM32F4xx/onewire/halconf_community.h

@@ -61,13 +61,18 @@
 /*===========================================================================*/
 /* 1-wire driver related settings.                                           */
 /*===========================================================================*/
-
 /**
- * @brief   Enables strong pull up support.
+ * @brief   Enables strong pull up feature.
  * @note    Disabling this option saves both code and data space.
  */
 #define ONEWIRE_USE_STRONG_PULLUP   FALSE
 
+/**
+ * @brief   Enables search ROM feature.
+ * @note    Disabling this option saves both code and data space.
+ */
+#define ONEWIRE_USE_SEARCH_ROM      TRUE
+
 #endif /* _HALCONF_COMMUNITY_H_ */
 
 /** @} */