* - ESP_ERR_NO_MEM if out of memory
* - ESP_OK on success
*/
-esp_err_t spi_bus_add_device(spi_host_device_t host, spi_device_interface_config_t *dev_config, spi_device_handle_t *handle);
+esp_err_t spi_bus_add_device(spi_host_device_t host, const spi_device_interface_config_t *dev_config, spi_device_handle_t *handle);
/**
Add a device. This allocates a CS line for the device, allocates memory for the device structure and hooks
up the CS pin to whatever is specified.
*/
-esp_err_t spi_bus_add_device(spi_host_device_t host, spi_device_interface_config_t *dev_config, spi_device_handle_t *handle)
+esp_err_t spi_bus_add_device(spi_host_device_t host, const spi_device_interface_config_t *dev_config, spi_device_handle_t *handle)
{
int freecs;
int apbclk=APB_CLK_FREQ;
//Allocate queues, set defaults
dev->trans_queue=xQueueCreate(dev_config->queue_size, sizeof(spi_trans_priv));
dev->ret_queue=xQueueCreate(dev_config->queue_size, sizeof(spi_trans_priv));
- if (!dev->trans_queue || !dev->ret_queue) goto nomem;
- if (dev_config->duty_cycle_pos==0) dev_config->duty_cycle_pos=128;
+ if (!dev->trans_queue || !dev->ret_queue) goto nomem;
dev->host=spihost[host];
//We want to save a copy of the dev config in the dev struct.
memcpy(&dev->cfg, dev_config, sizeof(spi_device_interface_config_t));
+ if (dev->cfg.duty_cycle_pos==0) dev->cfg.duty_cycle_pos=128;
// TODO: if we have to change the apb clock among transactions, re-calculate this each time the apb clock lock is acquired.
- dev->clk_cfg.eff_clk = spi_cal_clock(apbclk, dev_config->clock_speed_hz, dev_config->duty_cycle_pos, (uint32_t*)&dev->clk_cfg.reg);
+ dev->clk_cfg.eff_clk = spi_cal_clock(apbclk, dev->cfg.clock_speed_hz, dev->cfg.duty_cycle_pos, (uint32_t*)&dev->clk_cfg.reg);
//Set CS pin, CS options
if (dev_config->spics_io_num >= 0) {