Merge pull request #6355 from OlegHahm/at86rf2xx_ext_nocca

at86rf2xx: remove CCA check

drivers/at86rf2xx/at86rf2xx.c

@@ -144,30 +144,6 @@ void at86rf2xx_reset(at86rf2xx_t *dev)
     DEBUG("at86rf2xx_reset(): reset complete.\n");
 }
 
-bool at86rf2xx_cca(at86rf2xx_t *dev)
-{
-    uint8_t tmp;
-    uint8_t status;
-
-    at86rf2xx_assert_awake(dev);
-
-    /* trigger CCA measurment */
-    tmp = at86rf2xx_reg_read(dev, AT86RF2XX_REG__PHY_CC_CCA);
-    tmp &= AT86RF2XX_PHY_CC_CCA_MASK__CCA_REQUEST;
-    at86rf2xx_reg_write(dev, AT86RF2XX_REG__PHY_CC_CCA, tmp);
-    /* wait for result to be ready */
-    do {
-        status = at86rf2xx_reg_read(dev, AT86RF2XX_REG__TRX_STATUS);
-    } while (!(status & AT86RF2XX_TRX_STATUS_MASK__CCA_DONE));
-    /* return according to measurement */
-    if (status & AT86RF2XX_TRX_STATUS_MASK__CCA_STATUS) {
-        return true;
-    }
-    else {
-        return false;
-    }
-}
-
 size_t at86rf2xx_send(at86rf2xx_t *dev, uint8_t *data, size_t len)
 {
     /* check data length */

drivers/at86rf2xx/at86rf2xx_netdev.c

@@ -340,16 +340,6 @@ static int _get(netdev2_t *netdev, netopt_t opt, void *val, size_t max_len)
             }
             break;
 
-        case NETOPT_IS_CHANNEL_CLR:
-            if (at86rf2xx_cca(dev)) {
-                *((netopt_enable_t *)val) = NETOPT_ENABLE;
-            }
-            else {
-                *((netopt_enable_t *)val) = NETOPT_DISABLE;
-            }
-            res = sizeof(netopt_enable_t);
-            break;
-
         case NETOPT_CSMA_RETRIES:
             if (max_len < sizeof(uint8_t)) {
                 res = -EOVERFLOW;

drivers/include/at86rf2xx.h

@@ -181,16 +181,6 @@ void at86rf2xx_setup(at86rf2xx_t *dev, const at86rf2xx_params_t *params);
  */
 void at86rf2xx_reset(at86rf2xx_t *dev);
 
-/**
- * @brief   Trigger a clear channel assessment
- *
- * @param[in] dev           device to use
- *
- * @return                  true if channel is clear
- * @return                  false if channel is busy
- */
-bool at86rf2xx_cca(at86rf2xx_t *dev);
-
 /**
  * @brief   Get the short address of the given device
  *