Merge branch 'fix/p4_spi_slave_example_not_work_v5.4' into 'release/v5.4'

fix(driver_spi): fixed slave (and slave_hd) driver and example error with alignment check (v5.4)

See merge request espressif/esp-idf!36403

Author: suda-morris

components/esp_driver_spi/src/gpspi/spi_master.c

@@ -1143,7 +1143,7 @@ static SPI_MASTER_ISR_ATTR esp_err_t setup_priv_desc(spi_host_t *host, spi_trans
 
     if (send_ptr && bus_attr->dma_enabled) {
         if ((!esp_ptr_dma_capable(send_ptr) || tx_unaligned)) {
-            ESP_RETURN_ON_FALSE(!(trans_desc->flags & SPI_TRANS_DMA_BUFFER_ALIGN_MANUAL), ESP_ERR_INVALID_ARG, SPI_TAG, "Set flag SPI_TRANS_DMA_BUFFER_ALIGN_MANUAL but TX buffer addr&len not align to %d, or not dma_capable", alignment);
+            ESP_RETURN_ON_FALSE(!(trans_desc->flags & SPI_TRANS_DMA_BUFFER_ALIGN_MANUAL), ESP_ERR_INVALID_ARG, SPI_TAG, "Set flag SPI_TRANS_DMA_BUFFER_ALIGN_MANUAL but TX buffer addr&len not align to %d byte, or not dma_capable", alignment);
             //if txbuf in the desc not DMA-capable, or not bytes aligned to alignment, malloc a new one
             ESP_EARLY_LOGD(SPI_TAG, "Allocate TX buffer for DMA");
             tx_byte_len = (tx_byte_len + alignment - 1) & (~(alignment - 1));   // up align alignment
@@ -1163,7 +1163,7 @@ static SPI_MASTER_ISR_ATTR esp_err_t setup_priv_desc(spi_host_t *host, spi_trans
 
     if (rcv_ptr && bus_attr->dma_enabled) {
         if ((!esp_ptr_dma_capable(rcv_ptr) || rx_unaligned)) {
-            ESP_RETURN_ON_FALSE(!(trans_desc->flags & SPI_TRANS_DMA_BUFFER_ALIGN_MANUAL), ESP_ERR_INVALID_ARG, SPI_TAG, "Set flag SPI_TRANS_DMA_BUFFER_ALIGN_MANUAL but RX buffer addr&len not align to %d, or not dma_capable", alignment);
+            ESP_RETURN_ON_FALSE(!(trans_desc->flags & SPI_TRANS_DMA_BUFFER_ALIGN_MANUAL), ESP_ERR_INVALID_ARG, SPI_TAG, "Set flag SPI_TRANS_DMA_BUFFER_ALIGN_MANUAL but RX buffer addr&len not align to %d byte, or not dma_capable", alignment);
             //if rxbuf in the desc not DMA-capable, or not aligned to alignment, malloc a new one
             ESP_EARLY_LOGD(SPI_TAG, "Allocate RX buffer for DMA");
             rx_byte_len = (rx_byte_len + alignment - 1) & (~(alignment - 1));   // up align alignment

components/esp_driver_spi/src/gpspi/spi_slave.c

@@ -332,7 +332,7 @@ static esp_err_t SPI_SLAVE_ISR_ATTR spi_slave_setup_priv_trans(spi_host_device_t
 
     if (spihost[host]->dma_enabled && trans->tx_buffer) {
         if ((!esp_ptr_dma_capable(trans->tx_buffer) || ((((uint32_t)trans->tx_buffer) | buffer_byte_len) & (alignment - 1)))) {
-            ESP_RETURN_ON_FALSE_ISR(trans->flags & SPI_SLAVE_TRANS_DMA_BUFFER_ALIGN_AUTO, ESP_ERR_INVALID_ARG, SPI_TAG, "TX buffer addr&len not align to %d, or not dma_capable", alignment);
+            ESP_RETURN_ON_FALSE_ISR(trans->flags & SPI_SLAVE_TRANS_DMA_BUFFER_ALIGN_AUTO, ESP_ERR_INVALID_ARG, SPI_TAG, "TX buffer addr&len not align to %d byte, or not dma_capable", alignment);
             //if txbuf in the desc not DMA-capable, or not align to "alignment", malloc a new one
             ESP_EARLY_LOGD(SPI_TAG, "Allocate TX buffer for DMA");
             buffer_byte_len = (buffer_byte_len + alignment - 1) & (~(alignment - 1));   // up align to "alignment"
@@ -349,7 +349,7 @@ static esp_err_t SPI_SLAVE_ISR_ATTR spi_slave_setup_priv_trans(spi_host_device_t
     }
     if (spihost[host]->dma_enabled && trans->rx_buffer) {
         if ((!esp_ptr_dma_capable(trans->rx_buffer) || ((((uint32_t)trans->rx_buffer) | (trans->length + 7) / 8) & (alignment - 1)))) {
-            ESP_RETURN_ON_FALSE_ISR(trans->flags & SPI_SLAVE_TRANS_DMA_BUFFER_ALIGN_AUTO, ESP_ERR_INVALID_ARG, SPI_TAG, "RX buffer addr&len not align to %d, or not dma_capable", alignment);
+            ESP_RETURN_ON_FALSE_ISR(trans->flags & SPI_SLAVE_TRANS_DMA_BUFFER_ALIGN_AUTO, ESP_ERR_INVALID_ARG, SPI_TAG, "RX buffer addr&len not align to %d byte, or not dma_capable", alignment);
             //if rxbuf in the desc not DMA-capable, or not align to "alignment", malloc a new one
             ESP_EARLY_LOGD(SPI_TAG, "Allocate RX buffer for DMA");
             buffer_byte_len = (buffer_byte_len + alignment - 1) & (~(alignment - 1));   // up align to "alignment"

components/esp_driver_spi/src/gpspi/spi_slave_hd.c

@@ -597,8 +597,8 @@ static esp_err_t s_spi_slave_hd_setup_priv_trans(spi_host_device_t host, spi_sla
     uint16_t alignment = spihost[host]->internal_mem_align_size;
     uint32_t byte_len = orig_trans->len;
 
-    if (((uint32_t)orig_trans->data) | (byte_len & (alignment - 1))) {
-        ESP_RETURN_ON_FALSE(orig_trans->flags & SPI_SLAVE_HD_TRANS_DMA_BUFFER_ALIGN_AUTO, ESP_ERR_INVALID_ARG, TAG, "data buffer addr&len not align to %d, or not dma_capable", alignment);
+    if (((uint32_t)orig_trans->data | byte_len) & (alignment - 1)) {
+        ESP_RETURN_ON_FALSE(orig_trans->flags & SPI_SLAVE_HD_TRANS_DMA_BUFFER_ALIGN_AUTO, ESP_ERR_INVALID_ARG, TAG, "data buffer addr&len not align to %d byte, or not dma_capable", alignment);
         byte_len = (byte_len + alignment - 1) & (~(alignment - 1));  // up align to alignment
         ESP_LOGD(TAG, "Re-allocate %s buffer of len %" PRIu32 " for DMA", (chan == SPI_SLAVE_CHAN_TX) ? "TX" : "RX", byte_len);
         priv_trans->aligned_buffer = heap_caps_aligned_alloc(64, byte_len, MALLOC_CAP_DMA);

components/esp_driver_spi/test_apps/param/main/test_spi_param.c

@@ -1644,6 +1644,7 @@ static void test_master_hd_no_dma(void)
                     uint32_t test_trans_len = SOC_SPI_MAXIMUM_BUFFER_SIZE;
                     unity_wait_for_signal("Slave ready");
                     TEST_ESP_OK(essl_spi_rddma(dev0, master_receive, test_trans_len, -1, 0));
+                    unity_wait_for_signal("Slave ready");
                     TEST_ESP_OK(essl_spi_wrdma(dev0, master_send, test_trans_len, -1, 0));
 
                     ESP_LOG_BUFFER_HEX("master tx", master_send, test_trans_len);
@@ -1691,11 +1692,12 @@ static void test_slave_hd_no_dma(void)
                         .len = test_trans_len,
                         .flags = SPI_SLAVE_HD_TRANS_DMA_BUFFER_ALIGN_AUTO,
                     };
-                    unity_send_signal("Slave ready");
                     TEST_ESP_OK(spi_slave_hd_queue_trans(TEST_SPI_HOST, SPI_SLAVE_CHAN_TX, &slave_trans, portMAX_DELAY));
+                    unity_send_signal("Slave ready");
+                    TEST_ESP_OK(spi_slave_hd_get_trans_res(TEST_SPI_HOST, SPI_SLAVE_CHAN_TX, &ret_trans, portMAX_DELAY));
                     slave_trans.data = slave_receive;
                     TEST_ESP_OK(spi_slave_hd_queue_trans(TEST_SPI_HOST, SPI_SLAVE_CHAN_RX, &slave_trans, portMAX_DELAY));
-                    TEST_ESP_OK(spi_slave_hd_get_trans_res(TEST_SPI_HOST, SPI_SLAVE_CHAN_TX, &ret_trans, portMAX_DELAY));
+                    unity_send_signal("Slave ready");
                     TEST_ESP_OK(spi_slave_hd_get_trans_res(TEST_SPI_HOST, SPI_SLAVE_CHAN_RX, &ret_trans, portMAX_DELAY));
 
                     ESP_LOG_BUFFER_HEX("slave tx", slave_send, test_trans_len);

examples/peripherals/spi_slave/receiver/main/app_main.c

@@ -100,11 +100,10 @@ void app_main(void)
     ret = spi_slave_initialize(RCV_HOST, &buscfg, &slvcfg, SPI_DMA_CH_AUTO);
     assert(ret == ESP_OK);
 
-    WORD_ALIGNED_ATTR char sendbuf[129] = "";
-    WORD_ALIGNED_ATTR char recvbuf[129] = "";
-    memset(recvbuf, 0, 33);
-    spi_slave_transaction_t t;
-    memset(&t, 0, sizeof(t));
+    char *sendbuf = spi_bus_dma_memory_alloc(RCV_HOST, 129, 0);
+    char *recvbuf = spi_bus_dma_memory_alloc(RCV_HOST, 129, 0);
+    assert(sendbuf && recvbuf);
+    spi_slave_transaction_t t = {0};
 
     while (1) {
         //Clear receive buffer, set send buffer to something sane

examples/peripherals/spi_slave_hd/append_mode/master/main/app_main.c

@@ -24,7 +24,7 @@
 #define GPIO_CS            10
 
 #define HOST_ID            SPI2_HOST
-#define TRANSACTION_LEN    16
+#define TRANSACTION_LEN    64
 //The SPI transaction cycles in this example. You may change the cycle. e.g., use the ``sender`` and change it to a infinite loop
 #define EXAMPLE_CYCLES     10
 

examples/peripherals/spi_slave_hd/append_mode/slave/main/app_main.c

@@ -25,7 +25,7 @@
 
 #define HOST_ID             SPI2_HOST
 #define QUEUE_SIZE          6
-#define TRANSACTION_LEN     16
+#define TRANSACTION_LEN     64
 #define SYNC_REG_FROM_HOST  (14 * 4)
 #define SYNC_REG_TO_HOST    (15 * 4)
 
@@ -72,7 +72,7 @@ static esp_err_t create_transaction_pool(uint8_t **data_buf, trans_link_t *trans
 {
     for (int i = 0; i < times; i++) {
         //malloc data buffers for transaction
-        data_buf[i] = heap_caps_calloc(1, TRANSACTION_LEN, MALLOC_CAP_DMA);
+        data_buf[i] = spi_bus_dma_memory_alloc(HOST_ID, TRANSACTION_LEN, 0);
         if (!data_buf[i]) {
             ESP_LOGI("Create pool:", "No enough memory");
             return ESP_ERR_NO_MEM;

examples/peripherals/spi_slave_hd/segment_mode/seg_slave/main/app_main.c

@@ -198,7 +198,9 @@ void sender(void *arg)
             data_ready = get_tx_data(send_buf[descriptor_id], send_buf_size, &ready_data_size);
             if (data_ready) {
                 slave_trans[descriptor_id].data = send_buf[descriptor_id];
-                slave_trans[descriptor_id].len = ready_data_size;
+                slave_trans[descriptor_id].len = send_buf_size;
+                //To use dma, data buffer address and trans_len should byte align to hardware requirement, or using following flag for auto deal by driver.
+                slave_trans[descriptor_id].flags |= SPI_SLAVE_HD_TRANS_DMA_BUFFER_ALIGN_AUTO;
                 //Due to the `queue_sent_cnt` and `queue_recv_cnt` logic above, we are sure there is space to send data, this will return ESP_OK immediately
                 ESP_ERROR_CHECK(spi_slave_hd_queue_trans(SLAVE_HOST, SPI_SLAVE_CHAN_TX, &slave_trans[descriptor_id], portMAX_DELAY));
                 descriptor_id = (descriptor_id + 1) % QUEUE_SIZE;   //descriptor_id will be: 0, 1, 2, ..., QUEUE_SIZE, 0, 1, ....
@@ -234,7 +236,7 @@ void receiver(void *arg)
     uint8_t *recv_buf[QUEUE_SIZE];
     spi_slave_hd_data_t slave_trans[QUEUE_SIZE];
     for (int i = 0; i < QUEUE_SIZE; i++) {
-        recv_buf[i] = heap_caps_calloc(1, recv_buf_size, MALLOC_CAP_DMA);
+        recv_buf[i] = spi_bus_dma_memory_alloc(SLAVE_HOST, recv_buf_size, MALLOC_CAP_8BIT);
         if (!recv_buf[i]) {
             ESP_LOGE(TAG, "No enough memory!");
             abort();
@@ -249,6 +251,7 @@ void receiver(void *arg)
     for (int i = 0; i < QUEUE_SIZE; i++) {
         slave_trans[descriptor_id].data = recv_buf[descriptor_id];
         slave_trans[descriptor_id].len = recv_buf_size;
+        slave_trans[descriptor_id].flags |= SPI_SLAVE_HD_TRANS_DMA_BUFFER_ALIGN_AUTO;
         ESP_ERROR_CHECK(spi_slave_hd_queue_trans(SLAVE_HOST, SPI_SLAVE_CHAN_RX, &slave_trans[descriptor_id], portMAX_DELAY));
         descriptor_id = (descriptor_id + 1) % QUEUE_SIZE;   //descriptor_id will be: 0, 1, 2, ..., QUEUE_SIZE, 0, 1, ....
     }
@@ -266,7 +269,6 @@ void receiver(void *arg)
          */
         ESP_ERROR_CHECK(spi_slave_hd_get_trans_res(SLAVE_HOST, SPI_SLAVE_CHAN_RX, &ret_trans, portMAX_DELAY));
         //Process the received data in your own code. Here we just print it out.
-        printf("%d bytes are received: \n%s\n", ret_trans->trans_len, ret_trans->data);
         memset(ret_trans->data, 0x0, recv_buf_size);
 
         /**
@@ -288,10 +290,10 @@ void app_main(void)
     uint8_t init_value[SOC_SPI_MAXIMUM_BUFFER_SIZE] = {0x0};
     spi_slave_hd_write_buffer(SLAVE_HOST, 0, init_value, SOC_SPI_MAXIMUM_BUFFER_SIZE);
 
-    static uint32_t send_buf_size = 5000;
+    static uint32_t send_buf_size = 4800;
     spi_slave_hd_write_buffer(SLAVE_HOST, SLAVE_MAX_TX_BUF_LEN_REG, (uint8_t *)&send_buf_size, sizeof(send_buf_size));
 
-    static uint32_t recv_buf_size = 120;
+    static uint32_t recv_buf_size = 128;
     spi_slave_hd_write_buffer(SLAVE_HOST, SLAVE_MAX_RX_BUF_LEN_REG, (uint8_t *)&recv_buf_size, sizeof(recv_buf_size));
 
     uint32_t slave_ready_flag = SLAVE_READY_FLAG;