From 50c89877c36b5f588d33f1098c2ea000a88e8407 Mon Sep 17 00:00:00 2001
From: Joel Bodenmann <joel@embedded.pro>
Date: Thu, 2 Feb 2017 17:07:59 +0100
Subject: Adding UC8173 driver

---
 .../addons/gdisp/board_UC8173_nordic_nrf52_sdk11.h | 121 +++++++++++++++++++++
 1 file changed, 121 insertions(+)
 create mode 100644 boards/addons/gdisp/board_UC8173_nordic_nrf52_sdk11.h

(limited to 'boards')

diff --git a/boards/addons/gdisp/board_UC8173_nordic_nrf52_sdk11.h b/boards/addons/gdisp/board_UC8173_nordic_nrf52_sdk11.h
new file mode 100644
index 00000000..a487ef20
--- /dev/null
+++ b/boards/addons/gdisp/board_UC8173_nordic_nrf52_sdk11.h
@@ -0,0 +1,121 @@
+#ifndef _GDISP_LLD_BOARD_H
+#define _GDISP_LLD_BOARD_H
+
+#include "nrf_gpio.h"
+#include "nrf_drv_spi.h"
+#include "app_util_platform.h"
+
+#define PIN_CS			29
+#define PIN_SCK			 3
+#define PIN_MOSI		 4
+#define PIN_DC			12
+#define PIN_RESET		11
+#define PIN_BUSY		27
+
+#define SPI_INSTANCE	0
+
+static const nrf_drv_spi_t spi = NRF_DRV_SPI_INSTANCE(SPI_INSTANCE);
+
+static GFXINLINE bool_t init_board(GDisplay* g)
+{
+	nrf_drv_spi_config_t spi_config;
+	ret_code_t err = NRF_SUCCESS;
+
+	(void)g;
+
+	// Initialize RESET pin
+	nrf_gpio_cfg_output(PIN_RESET);
+
+	// Initialize RESET pin
+	nrf_gpio_cfg_output(PIN_DC);
+	
+	// Initialize BUSY pin
+	nrf_gpio_cfg_input(PIN_BUSY, NRF_GPIO_PIN_NOPULL);
+
+	// Initialize RESET pin
+	nrf_gpio_cfg_output(PIN_CS);
+
+	// Initialize SPI
+	spi_config.sck_pin		= PIN_SCK;
+	spi_config.mosi_pin		= PIN_MOSI;
+	spi_config.miso_pin		= NRF_DRV_SPI_PIN_NOT_USED;
+	spi_config.ss_pin		= NRF_DRV_SPI_PIN_NOT_USED;	// We have to control the CS line ourself for burst writes > 255 bytes
+	spi_config.irq_priority	= APP_IRQ_PRIORITY_LOW;
+	spi_config.orc			= 0xFF;
+	spi_config.frequency	= NRF_DRV_SPI_FREQ_4M;
+	spi_config.mode			= NRF_DRV_SPI_MODE_0;
+	spi_config.bit_order	= NRF_DRV_SPI_BIT_ORDER_MSB_FIRST;
+	err = nrf_drv_spi_init(&spi, &spi_config, 0);
+	if (err != NRF_SUCCESS) {
+		return FALSE;
+	}
+
+	return TRUE;
+}
+
+static GFXINLINE void post_init_board(GDisplay* g)
+{
+	(void)g;
+}
+
+static GFXINLINE void setpin_reset(GDisplay* g, bool_t state)
+{
+	(void)g;
+
+	if (state) {
+		nrf_gpio_pin_set(PIN_RESET);
+	} else {
+		nrf_gpio_pin_clear(PIN_RESET);
+	}
+}
+
+static GFXINLINE bool_t getpin_busy(GDisplay* g)
+{
+	(void)g;
+	
+	if (nrf_gpio_pin_read(PIN_BUSY) == 1) {
+		return TRUE;
+	} else {
+		return FALSE;
+	}
+}
+
+static GFXINLINE void acquire_bus(GDisplay* g)
+{
+	(void)g;
+
+	nrf_gpio_pin_clear(PIN_CS);
+}
+
+static GFXINLINE void release_bus(GDisplay* g)
+{
+	(void)g;
+
+	nrf_gpio_pin_set(PIN_CS);
+}
+
+static GFXINLINE void write_cmd(GDisplay* g, uint8_t cmd)
+{
+	(void)g;
+
+	nrf_gpio_pin_clear(PIN_DC);
+	nrf_drv_spi_transfer(&spi, &cmd, 1, 0, 0);
+}
+
+static GFXINLINE void write_data(GDisplay* g, uint8_t data)
+{
+	(void)g;
+	
+	nrf_gpio_pin_set(PIN_DC);
+	nrf_drv_spi_transfer(&spi, &data, 1, 0, 0);
+}
+
+static GFXINLINE void write_data_burst(GDisplay* g, uint8_t* data, uint8_t length)
+{
+	(void)g;
+	
+	nrf_gpio_pin_set(PIN_DC);
+	nrf_drv_spi_transfer(&spi, data, length, 0, 0);
+}
+
+#endif /* _GDISP_LLD_BOARD_H */
-- 
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