diff options
Diffstat (limited to 'components')
| -rw-r--r-- | components/drivers/spi/spi_core.c | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/components/drivers/spi/spi_core.c b/components/drivers/spi/spi_core.c index 994faa4bf4..3209a54db9 100644 --- a/components/drivers/spi/spi_core.c +++ b/components/drivers/spi/spi_core.c @@ -94,11 +94,20 @@ rt_err_t rt_spi_configure(struct rt_spi_device *device, RT_ASSERT(device != RT_NULL); + /* If the configurations are the same, we don't need to set again. */ + if(device->config.data_width == cfg->data_width && + device->config.mode == (cfg->mode & RT_SPI_MODE_MASK) && + device->config.max_hz == cfg->max_hz) + { + return RT_EOK; + } + /* set configuration */ device->config.data_width = cfg->data_width; - device->config.mode = cfg->mode & RT_SPI_MODE_MASK ; - device->config.max_hz = cfg->max_hz ; + device->config.mode = cfg->mode & RT_SPI_MODE_MASK; + device->config.max_hz = cfg->max_hz; + /* reset the CS pin */ if (device->cs_pin != PIN_NONE) { if (device->config.mode & RT_SPI_CS_HIGH) |