change: spi.transfer尝试支持全双工

app/port/luat_spi_air101.c

@@ -13,6 +13,8 @@
 #include "luat_log.h"
 #include "luat_timer.h"
 
+static uint8_t luat_spi_mode = 0;
+
 int luat_spi_device_config(luat_spi_device_t* spi_dev) {
     unsigned int clk;
     uint8_t TLS_SPI_MODE = 0x00 ;
@@ -112,6 +114,8 @@ int luat_spi_setup(luat_spi_t* spi) {
     tls_spi_trans_type(SPI_DMA_TRANSFER);
     ret = tls_spi_setup(TLS_SPI_MODE, TLS_SPI_CS_LOW, clk);
 
+    luat_spi_mode = spi->mode;
+
     return ret;
 }
 
@@ -119,9 +123,19 @@ int luat_spi_setup(luat_spi_t* spi) {
 int luat_spi_close(int spi_id) {
     return 0;
 }
+
 //收发SPI数据，返回接收字节数
+int32_t tls_spi_xfer(const void *data_out, void *data_in, uint32_t num_out, uint32_t num_in);
 int luat_spi_transfer(int spi_id, const char* send_buf, size_t send_length, char* recv_buf, size_t recv_length){
-    tls_spi_read_with_cmd(send_buf, send_length, recv_buf, recv_length);
+    //tls_spi_read_with_cmd(send_buf, send_length, recv_buf, recv_length);
+    if (luat_spi_mode == 0)
+        tls_spi_xfer(send_buf, recv_buf, send_buf, recv_length);
+    else {
+        if (send_length > 0)
+            tls_spi_write(send_buf, send_length);
+        if (recv_length > 0)
+            tls_spi_read(recv_buf, recv_length);
+    }
     return recv_length;
 }
 //收SPI数据，返回接收字节数