SPI driver, gpio driver skeleton, added newline.

include/drivers/user_config_driver.h

@@ -15,4 +15,4 @@ typedef struct {
 user_config_ret_t user_config_init(user_config_t *config, char *config_file);
 user_config_ret_t user_config_deinit(user_config_t *config);
 
-#endif
+#endif

include/drivers/user_spi_driver.h

@@ -14,4 +14,4 @@ user_spi_ret_t user_spi_driver_deinit(user_spi_driver_t *spi);
 user_spi_ret_t user_spi_driver_xfer(user_spi_driver_t *spi, uint8_t *tx_buf,
                                     uint8_t rx_buf, uint32_t len);
 
-#endif
+#endif

include/utils/user_log_util.h

@@ -13,4 +13,4 @@ typedef enum {
 
 void user_log_print(user_log_level_t level, char *fmt, ...);
 
-#endif
+#endif

lib/st7789_lcd

@@ -1 +1 @@
-Subproject commit 6b2febd5bce69739fcdadf1b913f1e50278e1afa
+Subproject commit c685c2a4a80e047a495c2061d673f1fd191a8edd

src/drivers/user_config_driver.c

@@ -15,4 +15,4 @@ user_config_ret_t user_config_init(user_config_t *config, char *config_file) {
 
 user_config_ret_t user_config_deinit(user_config_t *config) {
     //
-}
+}

src/drivers/user_spi_driver.c

@@ -3,6 +3,9 @@
 #include <errno.h>
 #include <fcntl.h>
 #include <unistd.h>
+#include <sys/ioctl.h>
+#include <linux/types.h>
+#include <linux/spi/spidev.h>
 
 #include "drivers/user_config_driver.h"
 #include "utils/user_log_util.h"
@@ -31,5 +34,17 @@ user_spi_ret_t user_spi_driver_deinit(user_spi_driver_t *spi) {
 
 user_spi_ret_t user_spi_driver_xfer(user_spi_driver_t *spi, uint8_t *tx_buf,
                                     uint8_t rx_buf, uint32_t len) {
-    //
-}
+    struct spi_ioc_transfer txn = {
+        .tx_buf = (unsigned long)tx_buf,
+        .len = len,
+        .cs_change = 0,
+        .speed_hz = 16000000,
+        .bits_per_word = 8
+    };
+    if(ioctl(spi->spidev_fd, SPI_IOC_MESSAGE(1), &txn) < 0) {
+        USER_LOG(USER_LOG_ERROR, "SPI transaction error.");
+        return USER_SPI_ERROR;
+    }
+
+    return USER_SPI_OK;
+}

src/main.c

@@ -51,4 +51,4 @@ int main(int argc, const char *argv[]) {
     USER_LOG(USER_LOG_INFO, "Application exit.");
 
     return 0;
-}
+}

src/tasks/user_lvgl_task.c

@@ -61,4 +61,4 @@ void *user_lv_tick(void *arguments) {
     }
 
     return NULL;
-}
+}

src/utils/user_log_util.c

@@ -35,4 +35,4 @@ void user_log_print(user_log_level_t level, char *fmt, ...) {
     fprintf(stderr, "\n");
     
     va_end(args);
-}
+}