ports: Make new ports/ sub-directory and move all ports there.

This is to keep the top-level directory clean, to make it clear what is
core and what is a port, and to allow the repository to grow with new ports
in a sustainable way.

1 files changed, 103 insertions, 0 deletions

diff --git a/ports/stm32/dma.h b/ports/stm32/dma.h
new file mode 100644
index 000000000..55fb62175
--- /dev/null
+++ b/ports/stm32/dma.h
@@ -0,0 +1,103 @@
+/*
+ * This file is part of the MicroPython project, http://micropython.org/
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2015 Damien P. George
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+#ifndef MICROPY_INCLUDED_STMHAL_DMA_H
+#define MICROPY_INCLUDED_STMHAL_DMA_H
+
+typedef struct _dma_descr_t dma_descr_t;
+
+#if defined(MCU_SERIES_F4) || defined(MCU_SERIES_F7)
+
+extern const dma_descr_t dma_I2C_1_RX;
+extern const dma_descr_t dma_SPI_3_RX;
+extern const dma_descr_t dma_I2C_4_RX;
+extern const dma_descr_t dma_I2C_3_RX;
+extern const dma_descr_t dma_I2C_2_RX;
+extern const dma_descr_t dma_SPI_2_RX;
+extern const dma_descr_t dma_SPI_2_TX;
+extern const dma_descr_t dma_I2C_3_TX;
+extern const dma_descr_t dma_I2C_4_TX;
+extern const dma_descr_t dma_DAC_1_TX;
+extern const dma_descr_t dma_DAC_2_TX;
+extern const dma_descr_t dma_SPI_3_TX;
+extern const dma_descr_t dma_I2C_1_TX;
+extern const dma_descr_t dma_I2C_2_TX;
+extern const dma_descr_t dma_SDMMC_2_RX;
+extern const dma_descr_t dma_SPI_1_RX;
+extern const dma_descr_t dma_SPI_5_RX;
+extern const dma_descr_t dma_SDIO_0_RX;
+extern const dma_descr_t dma_SPI_4_RX;
+extern const dma_descr_t dma_SPI_5_TX;
+extern const dma_descr_t dma_SPI_4_TX;
+extern const dma_descr_t dma_SPI_6_TX;
+extern const dma_descr_t dma_SPI_1_TX;
+extern const dma_descr_t dma_SDMMC_2_TX;
+extern const dma_descr_t dma_SPI_6_RX;
+extern const dma_descr_t dma_SDIO_0_TX;
+
+#elif defined(MCU_SERIES_L4)
+
+extern const dma_descr_t dma_ADC_1_RX;
+extern const dma_descr_t dma_ADC_2_RX;
+extern const dma_descr_t dma_SPI_1_RX;
+extern const dma_descr_t dma_I2C_3_TX;
+extern const dma_descr_t dma_ADC_3_RX;
+extern const dma_descr_t dma_SPI_1_TX;
+extern const dma_descr_t dma_I2C_3_RX;
+extern const dma_descr_t dma_DAC_1_TX;
+extern const dma_descr_t dma_SPI_2_RX;
+extern const dma_descr_t dma_I2C_2_TX;
+extern const dma_descr_t dma_DAC_2_TX;
+extern const dma_descr_t dma_SPI_2_TX;
+extern const dma_descr_t dma_I2C_2_RX;
+extern const dma_descr_t dma_I2C_1_TX;
+extern const dma_descr_t dma_I2C_1_RX;
+extern const dma_descr_t dma_SPI_3_RX;
+extern const dma_descr_t dma_SPI_3_TX;
+extern const dma_descr_t dma_SDIO_0_TX;
+extern const dma_descr_t dma_SDIO_0_RX;
+
+#endif
+
+typedef union {
+    uint16_t    enabled;    // Used to test if both counters are == 0
+    uint8_t     counter[2];
+} dma_idle_count_t;
+extern volatile dma_idle_count_t dma_idle;
+#define DMA_IDLE_ENABLED()  (dma_idle.enabled != 0)
+
+#define DMA_SYSTICK_MASK            0x0e
+#define DMA_MSECS_PER_SYSTICK       (DMA_SYSTICK_MASK + 1)
+#define DMA_IDLE_TICK_MAX           (8)     // 128 msec
+#define DMA_IDLE_TICK(tick)         (((tick) & DMA_SYSTICK_MASK) == 0)
+
+
+void dma_init(DMA_HandleTypeDef *dma, const dma_descr_t *dma_descr, void *data);
+void dma_init_handle(DMA_HandleTypeDef *dma, const dma_descr_t *dma_descr, void *data);
+void dma_deinit(const dma_descr_t *dma_descr);
+void dma_invalidate_channel(const dma_descr_t *dma_descr);
+void dma_idle_handler(int controller);
+
+#endif // MICROPY_INCLUDED_STMHAL_DMA_H