Add support for LCD (ST7789)

1 files changed, 147 insertions, 0 deletions

diff --git a/src/drivers/spi_master_fast.h b/src/drivers/spi_master_fast.h
new file mode 100644
index 00000000..5cd4d7ae
--- /dev/null
+++ b/src/drivers/spi_master_fast.h
@@ -0,0 +1,147 @@
+ /* Copyright (c) 2015 Nordic Semiconductor. All Rights Reserved.
+ *
+ * The information contained herein is confidential property of Nordic
+ * Semiconductor ASA.Terms and conditions of usage are described in detail
+ * in NORDIC SEMICONDUCTOR STANDARD SOFTWARE LICENSE AGREEMENT.
+ *
+ * Licensees are granted free, non-transferable use of the information. NO
+ * WARRANTY of ANY KIND is provided. This heading must NOT be removed from
+ * the file.
+ *
+ */
+
+#ifndef __SPI_MASTER_FAST_H
+#define __SPI_MASTER_FAST_H
+
+#include <stdbool.h>
+#include <stdint.h>
+
+#define SPI_FAST_DEFAULT_CONFIG {.pin_SCK = 1, .pin_MOSI = 2, .pin_MISO = 3, .pin_CSN = 4,  \
+                                 .frequency = SPI_FREQ_1MBPS, .config.fields.mode = 0, .config.fields.bit_order = SPI_BITORDER_MSB_LSB}
+
+/**
+ *  SPI master operating frequency
+ */
+typedef enum
+{
+    SPI_FREQ_125KBPS = 0x02,           /*!< drive SClk with frequency 125Kbps */
+    SPI_FREQ_250KBPS = 0x04,           /*!< drive SClk with frequency 250Kbps */
+    SPI_FREQ_500KBPS = 0x08,           /*!< drive SClk with frequency 500Kbps */
+    SPI_FREQ_1MBPS = 0x10,             /*!< drive SClk with frequency 1Mbps */
+    SPI_FREQ_2MBPS = 0x20,             /*!< drive SClk with frequency 2Mbps */
+    SPI_FREQ_4MBPS = 0x40,             /*!< drive SClk with frequency 4Mbps */
+    SPI_FREQ_8MBPS = 0x80              /*!< drive SClk with frequency 8Mbps */
+} SPI_frequency_t;
+
+/**
+ *  SPI master module number
+ */
+typedef enum
+{
+    SPI0 = 0,               /*!< SPI module 0 */
+    SPI1                    /*!< SPI module 1 */
+} SPI_module_number_t;
+
+/**
+ *  SPI mode
+ */
+typedef enum
+{
+    //------------------------Clock polarity 0, Clock starts with level 0-------------------------------------------
+    SPI_MODE0 = 0,          /*!< Sample data at rising edge of clock and shift serial data at falling edge */
+    SPI_MODE1,              /*!< sample data at falling edge of clock and shift serial data at rising edge */
+    //------------------------Clock polarity 1, Clock starts with level 1-------------------------------------------
+    SPI_MODE2,              /*!< sample data at falling edge of clock and shift serial data at rising edge */
+    SPI_MODE3               /*!< Sample data at rising edge of clock and shift serial data at falling edge */
+} SPI_mode_t;
+
+/**
+ *  SPI master bit ordering
+ */
+typedef enum
+{
+    SPI_BITORDER_MSB_LSB = 0, /*!< Most significant to least significant bit */
+    SPI_BITORDER_LSB_MSB      /*!< Least significant to most significant bit */
+} SPI_bit_order_t;
+
+/**
+ *  Struct containing all parameters necessary to configure the SPI interface
+ */
+typedef struct
+{
+    union
+    {
+        uint8_t SPI_cfg;            /*!< Bit mode and bit order merged, as in the SPI CONFIG register */
+        struct
+        {
+            uint8_t bit_order : 1;  /*!< SPI master bit order */
+            uint8_t mode : 2;       /*!< SPI master mode */
+            uint8_t : 5;            /*!< Padding */
+        }fields;
+    }config;    
+    uint8_t frequency;              /*!< SPI master frequency */
+    uint8_t pin_SCK;                /*!< SPI master SCK pin */
+    uint8_t pin_MOSI;               /*!< SPI master MOSI pin */
+    uint8_t pin_MISO;               /*!< SPI master MISO pin */
+    uint8_t pin_CSN;                /*!< SPI master chip select pin */
+} SPI_config_t;
+
+/**
+ * Initializes given SPI master with given configuration.
+ *
+ * After initializing the given SPI master with given configuration, this function also test if the
+ * SPI slave is responding with the configurations by transmitting few test bytes. If the slave did not
+ * respond then error is returned and contents of the rx_data are invalid.
+ *
+ * @param module_number SPI master number (SPIModuleNumber) to initialize.
+ * @param pointer to a struct of type @ref SPIConfig_t containing the SPI configuration parameters.
+ * @return
+ * @retval pointer to direct physical address of the requested SPI module if init was successful
+ * @retval 0, if either init failed or slave did not respond to the test transfer
+ */
+uint32_t* spi_master_init(SPI_module_number_t spi_num, SPI_config_t *spi_config);
+
+/**
+ * Transmit/receive data over SPI bus.
+ *
+ * @note Make sure at least transfer_size number of bytes is allocated in tx_data/rx_data.
+ *
+ * @param spi_num SPI master number (SPIModuleNumber)
+ * @param transfer_size  number of bytes to transmit/receive over SPI master
+ * @param tx_data pointer to the data that needs to be transmitted
+ * @param rx_data pointer to the data that needs to be received
+ * @return
+ * @retval true if transmit/reveive of transfer_size were completed.
+ * @retval false if transmit/reveive of transfer_size were not complete and tx_data/rx_data points to invalid data.
+ */
+bool spi_master_tx_rx(SPI_module_number_t spi_num, uint16_t transfer_size, const uint8_t *tx_data, uint8_t *rx_data);
+
+/**
+ * Transmit data over SPI bus.
+ *
+ * @note Make sure at least transfer_size number of bytes is allocated in tx_data.
+ *
+ * @param spi_num SPI master number (SPIModuleNumber)
+ * @param transfer_size  number of bytes to transmit/receive over SPI master
+ * @param tx_data pointer to the data that needs to be transmitted
+ * @return
+ * @retval true if transmit/reveive of transfer_size were completed.
+ * @retval false if transmit/reveive of transfer_size were not complete and tx_data/rx_data points to invalid data.
+ */
+bool spi_master_tx(SPI_module_number_t spi_num, uint16_t transfer_size, const uint8_t *tx_data);
+
+/**
+ * Receive data over SPI bus.
+ *
+ * @note Make sure at least transfer_size number of bytes is allocated in rx_data.
+ *
+ * @param spi_num SPI master number (SPIModuleNumber)
+ * @param transfer_size  number of bytes to transmit/receive over SPI master
+ * @param rx_data pointer to the data that needs to be received
+ * @return
+ * @retval true if transmit/reveive of transfer_size were completed.
+ * @retval false if transmit/reveive of transfer_size were not complete and tx_data/rx_data points to invalid data.
+ */
+bool spi_master_rx(SPI_module_number_t spi_num, uint16_t transfer_size, uint8_t *rx_data);
+ 
+#endif