From 31877f8682949d29b328a4f3ec7fb336d9326e4b Mon Sep 17 00:00:00 2001
From: Pavel Polach <pavel.polach@tropicsquare.com>
Date: Tue, 24 Sep 2024 11:03:48 +0200
Subject: [PATCH] Experimental SPI RASPBERRYPI update

---
 src/lt_l1.c | 17 +++++++++++++++--
 1 file changed, 15 insertions(+), 2 deletions(-)

diff --git a/src/lt_l1.c b/src/lt_l1.c
index c5511ff..11d204f 100644
--- a/src/lt_l1.c
+++ b/src/lt_l1.c
@@ -46,7 +46,7 @@ lt_ret_t lt_l1_read(lt_handle_t *h, const uint32_t max_len, const uint32_t timeo
         // store the byte which was initally in l2_buff
         uint8_t store_byte = h->l2_buff[0];
         // put raspberry command byte there
-        h->l2_buff[0] = PUT READ BYTE HERE;
+        h->l2_buff[0] = 0x00;
         // do transmit of that one command
         if (lt_l1_spi_transfer(h, 0, 1, timeout) != LT_OK)
         {
@@ -135,7 +135,20 @@ lt_ret_t lt_l1_write(lt_handle_t *h, const uint16_t len, const uint32_t timeout)
 #endif
 
     lt_l1_spi_csn_low(h);
-
+#ifdef EXPERIMENTAL_SPI_RASPBERRYPI
+    // store the byte which was initally in l2_buff
+    uint8_t store_byte = h->l2_buff[0];
+    // put raspberry command byte there
+    h->l2_buff[0] = 0x01;
+    // do transmit of that one command
+    if (lt_l1_spi_transfer(h, 0, 1, timeout) != LT_OK)
+    {
+        lt_l1_spi_csn_high(h);
+        return LT_L1_SPI_ERROR;
+    }
+    // put previous byte back to buffer and continue as usually
+    h->l2_buff[0] = store_byte;
+#endif
     if (lt_l1_spi_transfer(h, 0, len, timeout) != LT_OK)
     {
         lt_l1_spi_csn_high(h);