diff options
Diffstat (limited to 'nuttx/drivers/input/ads7843e.c')
| -rw-r--r-- | nuttx/drivers/input/ads7843e.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/nuttx/drivers/input/ads7843e.c b/nuttx/drivers/input/ads7843e.c index 620b8faee..98893a2f6 100644 --- a/nuttx/drivers/input/ads7843e.c +++ b/nuttx/drivers/input/ads7843e.c @@ -270,6 +270,11 @@ static inline void ads7843e_configspi(FAR struct spi_dev_s *spi) static inline void ads7843e_waitbusy(FAR struct ads7843e_dev_s *priv) { + /* BUSY is high impedance when the ads7843e not selected. When the + * ads7843e selected, BUSY is active high. Hence, it is necessary to have + * the ads7843e selected when this function is called. + */ + while (priv->config->busy(priv->config)); } |