From 4364daf54c1e57f639f78dc32d4e100b94db487e Mon Sep 17 00:00:00 2001
From: LennartF22 <18723691+LennartF22@users.noreply.github.com>
Date: Sat, 21 Sep 2024 18:46:29 +0200
Subject: [PATCH] Optimize CMT FIFO access

---
 lib/CMT2300a/cmt_spi3.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/lib/CMT2300a/cmt_spi3.c b/lib/CMT2300a/cmt_spi3.c
index 80d3103..aeae3d4 100644
--- a/lib/CMT2300a/cmt_spi3.c
+++ b/lib/CMT2300a/cmt_spi3.c
@@ -101,10 +101,12 @@ void cmt_spi3_write_fifo(const uint8_t* buf, const uint16_t len)
     };
 
     SPI_PARAM_LOCK();
+    spi_device_acquire_bus(spi_fifo, portMAX_DELAY);
     for (uint8_t i = 0; i < len; i++) {
         t.tx_buffer = buf + i;
         ESP_ERROR_CHECK(spi_device_polling_transmit(spi_fifo, &t));
     }
+    spi_device_release_bus(spi_fifo);
     SPI_PARAM_UNLOCK();
 }
 
@@ -116,9 +118,11 @@ void cmt_spi3_read_fifo(uint8_t* buf, const uint16_t len)
     };
 
     SPI_PARAM_LOCK();
+    spi_device_acquire_bus(spi_fifo, portMAX_DELAY);
     for (uint8_t i = 0; i < len; i++) {
         t.rx_buffer = buf + i;
         ESP_ERROR_CHECK(spi_device_polling_transmit(spi_fifo, &t));
     }
+    spi_device_release_bus(spi_fifo);
     SPI_PARAM_UNLOCK();
 }