donghengqaz commented on a change in pull request #1958:
URL: https://github.com/apache/incubator-nuttx/pull/1958#discussion_r503234502
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File path: arch/xtensa/src/esp32/esp32_spi.c
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@@ -861,11 +866,43 @@ static void esp32_spi_dma_exchange(FAR struct
esp32_spi_priv_s *priv,
uint32_t nwords)
{
uint32_t bytes = nwords * (priv->nbits / 8);
- uint8_t *tp = (uint8_t *)txbuffer;
- uint8_t *rp = (uint8_t *)rxbuffer;
+ uint8_t *tp;
+ uint8_t *rp;
uint32_t n;
uint32_t regval;
+ /* If the buffer comes from PSRAM, allocate a new one from DRAM */
+
+#ifdef CONFIG_XTENSA_USE_SEPERATE_IMEM
+ if (esp32_ptr_extram(txbuffer))
+ {
+ tp = up_imm_malloc(bytes);
+ if (tp == NULL)
Review comment:
Because the `esp32_spi_dma_exchange` can't return error code tell
callers that the function failed, so maybe we add an `assert` function here ?
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