Try to read and send the requested data in chunks

Author: matteius

main.c

@@ -202,31 +202,27 @@ static void command_loop(void)
                 uint8_t tx_buffer[MAX_BUFFER_SIZE]; // Buffer for transmit data
                 uint8_t rx_buffer[MAX_BUFFER_SIZE]; // Buffer for receive data
 
-                // Ensure buffer sizes are adequate
-                if (slen > MAX_BUFFER_SIZE || rlen > MAX_BUFFER_SIZE) {
-                    sendbyte_blocking(S_NAK);
-                    break;
-                }
-
                 // Read data to be sent (if slen > 0)
                 if (slen > 0) {
                     readbytes_blocking(tx_buffer, slen);
                 }
 
-                // Perform SPI operation
-                cs_select(SPI_CS);
+                sendbyte_blocking(S_ACK);
+
                 if (slen > 0) {
                     spi_write_blocking(SPI_IF, tx_buffer, slen);
                 }
-                if (rlen > 0) {
-                    spi_read_blocking(SPI_IF, 0, rx_buffer, rlen);
-                }
-                cs_deselect(SPI_CS);
 
-                // Send ACK followed by received data
-                sendbyte_blocking(S_ACK);
-                if (rlen > 0) {
-                    sendbytes_blocking(rx_buffer, rlen);
+                // Perform SPI operation in chunks
+                while(rlen > MAX_BUFFER_SIZE) {
+                    cs_select(SPI_CS);
+                    spi_read_blocking(SPI_IF, 0, rx_buffer, MAX_BUFFER_SIZE);
+                    cs_deselect(SPI_CS);
+
+                    // Send ACK followed by received data
+                    sendbytes_blocking(rx_buffer, MAX_BUFFER_SIZE);
+
+                    rlen -= MAX_BUFFER_SIZE;
                 }
 
                 break;