From 6029630643335ebe7dbba2da8e7bf2b5f7a434f9 Mon Sep 17 00:00:00 2001
From: Nils Faerber <nils.faerber@kernelconcepts.de>
Date: Sun, 5 May 2013 00:31:14 +0200
Subject: [PATCH] Start support for the accelerometer, change text position for
 clock setup

---
 metawatch/mw_acc.c  |  71 +++++++++++++++++++++++++++++
 metawatch/mw_acc.h  | 109 ++++++++++++++++++++++++++++++++++++++++++++
 ui/oswald_screens.c |   8 ++--
 3 files changed, 184 insertions(+), 4 deletions(-)
 create mode 100644 metawatch/mw_acc.c
 create mode 100644 metawatch/mw_acc.h

diff --git a/metawatch/mw_acc.c b/metawatch/mw_acc.c
new file mode 100644
index 0000000..270f246
--- /dev/null
+++ b/metawatch/mw_acc.c
@@ -0,0 +1,71 @@
+#include <msp430.h>
+#include <msp430xgeneric.h>
+#include <stdint.h>
+
+#include "mw_main.h"
+
+#include "mw_acc.h"
+
+void mw_init_acc_i2c(void)
+{
+	/* enable reset before configuration */
+	ACCELEROMETER_CTL1 |= UCSWRST;
+
+	/* configure as master using smclk / 40 = 399.5 kHz */
+	ACCELEROMETER_CTL0 = UCMST + UCMODE_3 + UCSYNC;
+	ACCELEROMETER_CTL1 = UCSSEL__SMCLK + UCSWRST;
+	ACCELEROMETER_BR0 = 42;
+
+	ACCELEROMETER_BR1 = 0;
+	ACCELEROMETER_I2CSA = KIONIX_DEVICE_ADDRESS;
+
+	/* release reset */
+	ACCELEROMETER_CTL1 &= ~UCSWRST;
+}
+
+/*
+ * DMA2 = SPI for LCD
+ */
+static void mw_acc_i2c_write_byte(uint8_t byte)
+{
+	ACCELEROMETER_TXBUF = byte;
+	while ((ACCELEROMETER_CTL1 & ACCELEROMETER_IFG) == 0)
+		nop();
+}
+
+/* OK this is polling write, but data is small and 400kHz I2C, it should "just work" :) */
+void mw_acc_i2c_write(const uint8_t addr, const void *data, const uint8_t len)
+{
+	int i;
+
+	if (len == 0) {
+		return;  
+	}
+  
+	while (UCB1STAT & UCBBUSY)
+		nop();
+  
+	/* 
+	 * setup for write and send the start condition
+	 */
+	ACCELEROMETER_IFG = 0;
+	ACCELEROMETER_CTL1 |= UCTR + UCTXSTT;
+	while (!(ACCELEROMETER_IFG & UCTXIFG))
+		nop();
+  
+	/* 
+	 * clear transmit interrupt flag,
+	 * send the register address
+	 */
+	ACCELEROMETER_IFG = 0;
+
+	mw_acc_i2c_write_byte(addr);
+
+	for (i=0; i<len; i++)
+		mw_acc_i2c_write_byte(*(uint8_t *)(data+i));
+
+	while (ACCELEROMETER_CTL1 & UCTXSTP)
+		nop();
+}
+
+
diff --git a/metawatch/mw_acc.h b/metawatch/mw_acc.h
new file mode 100644
index 0000000..59cee93
--- /dev/null
+++ b/metawatch/mw_acc.h
@@ -0,0 +1,109 @@
+#ifndef _MW_ACC_H
+#define _MW_ACC_H
+
+#define KIONIX_DEVICE_ADDRESS ( 0x0F )
+
+/* KIONIX accelerometer register addresses */
+#define KIONIX_XOUT_HPF_L        ( 0x00 )
+#define KIONIX_XOUT_HPF_H        ( 0x01 )
+#define KIONIX_YOUT_HPF_L        ( 0x02 )
+#define KIONIX_YOUT_HPF_H        ( 0x03 )
+#define KIONIX_ZOUT_HPF_L        ( 0x04 )
+#define KIONIX_ZOUT_HPF_H        ( 0x05 )
+#define KIONIX_XOUT_L            ( 0x06 )
+#define KIONIX_XOUT_H            ( 0x07 )
+#define KIONIX_YOUT_L            ( 0x08 )
+#define KIONIX_YOUT_H            ( 0x09 )
+#define KIONIX_ZOUT_L            ( 0x0A )
+#define KIONIX_ZOUT_H            ( 0x0B )
+#define KIONIX_DCST_RESP         ( 0x0C )
+#define KIONIX_WHO_AM_I          ( 0x0F )
+#define KIONIX_TILT_POS_CUR      ( 0x10 )
+#define KIONIX_TILT_POS_PRE      ( 0x11 )
+#define KIONIX_INT_SRC_REG1      ( 0x15 )
+#define KIONIX_INT_SRC_REG2      ( 0x16 )
+#define KIONIX_STATUS_REG        ( 0x18 )
+#define KIONIX_INT_REL           ( 0x1A )
+#define KIONIX_CTRL_REG1         ( 0x1B )
+#define KIONIX_CTRL_REG2         ( 0x1C )
+#define KIONIX_CTRL_REG3         ( 0x1D )
+#define KIONIX_INT_CTRL_REG1     ( 0x1E )
+#define KIONIX_INT_CTRL_REG2     ( 0x1F )
+#define KIONIX_INT_CTRL_REG3     ( 0x20 )
+#define KIONIX_DATA_CTRL_REG     ( 0x21 )
+#define KIONIX_TILT_TIMER        ( 0x28 )
+#define KIONIX_WUF_TIMER         ( 0x29 )
+#define KIONIX_TDT_TIMER         ( 0x2B )
+#define KIONIX_TDT_H_THRESH      ( 0x2C )
+#define KIONIX_TDT_L_THRESH      ( 0x2D )
+#define KIONIX_TDT_TAP_TIMER     ( 0x2E )
+#define KIONIX_TDT_TOTAL_TIMER   ( 0x2F )
+#define KIONIX_TDT_LATENCY_TIMER ( 0x30 )
+#define KIONIX_TDT_WINDOW_TIMER  ( 0x31 )
+#define KIONIX_SELF_TEST         ( 0x3A )
+#define KIONIX_WUF_THRESH        ( 0x5A )
+#define KIONIX_TILT_ANGLE        ( 0x5C )
+#define KIONIX_HYST_SET          ( 0x5F )
+
+/* CTRL_REG1 */
+#define PC1_STANDBY_MODE     ( 0 << 7 )
+#define PC1_OPERATING_MODE   ( 1 << 7 )
+#define RESOLUTION_8BIT      ( 0 << 6 )
+#define RESOLUTION_12BIT     ( 1 << 6 )
+#define DRDYE_DATA_AVAILABLE ( 1 << 5 )
+#define WUF_ENABLE           ( 1 << 1 )
+#define TAP_ENABLE_TDTE      ( 1 << 2 ) 
+#define TILT_ENABLE_TPE      ( 1 << 0 )
+
+/* CTRL_REG2 */
+#define TILT_LEM (1 << 5 )
+#define TILT_RIM (1 << 4 )
+#define TILT_DOM (1 << 3 )
+#define TILT_UPM (1 << 2 )
+#define TILT_FDM (1 << 1 )
+#define TILT_FUM (1 << 0 )
+
+/* CTRL_REG3 */
+#define SRST               ( 1 << 7 )
+#define TILT_ODR_1_6HZ     ( 0 << 5 )
+#define TILT_ODR_6_3HZ     ( 1 << 5 )
+#define TILT_ODR_12_5HZ    ( 2 << 5 )
+#define TILT_ODR_50HZ      ( 3 << 5 )
+#define DCST               ( 1 << 4 )
+#define TAP_ODR_50HZ       ( 0 << 2 )
+#define TAP_ODR_100HZ      ( 1 << 2 )
+#define TAP_ODR_200HZ      ( 2 << 2 )
+#define TAP_ODR_400HZ      ( 3 << 2 )
+#define WUF_ODR_25HZ       ( 0 << 0 )
+#define WUF_ODR_50HZ       ( 1 << 0 )
+#define WUF_ODR_100HZ      ( 2 << 0 )
+#define WUF_ODR_200HZ      ( 3 << 0 )
+
+/* INT_CTRL_REG1 */
+#define IEN ( 1 << 5 ) 
+#define IEA ( 1 << 4 )
+#define IEL ( 1 << 3 )
+#define IEU ( 1 << 2 )
+
+/* INT_CTRL_REG2 */
+#define XBW ( 1 << 7 ) 
+#define YBW ( 1 << 6 )
+#define ZBW ( 1 << 5 )
+
+/* INT_CTRL_REG3 */
+#define TLEM (1 << 5)
+#define TRIM (1 << 4)
+#define TDOM (1 << 3)
+#define TUPM (1 << 2)
+#define TFDM (1 << 1)
+#define TFUM (1 << 0)
+
+/* INT_SRC_REG2 */
+#define INT_TAP_SINGLE (0x04)
+#define INT_TAP_DOUBLE (0x08)
+
+/* for readability */
+#define ONE_BYTE ( 1 )
+
+#endif
+
diff --git a/ui/oswald_screens.c b/ui/oswald_screens.c
index 9d997c8..1da4827 100644
--- a/ui/oswald_screens.c
+++ b/ui/oswald_screens.c
@@ -219,18 +219,18 @@ void draw_datetime_setup_screen(datetime_setup_data_t *sdata)
 
 	if ((sdata->pos == 6 && sdata->on) || sdata->pos != 6) {
 		if (OswaldClk.clk24hr) {
-			oswald_write_character(2, 76, FONT_DROID8x12, 'x');
+			oswald_write_character(2, 76, FONT_6x9, 'x');
 		} else {
-			oswald_write_character(2, 76, FONT_DROID8x12, '_');
+			oswald_write_character(2, 76, FONT_6x9, '_');
 		}
 	}
 	oswald_write_string(15, 73, FONT_DROID8x12, "24hr");
 
 	if ((sdata->pos == 7 && sdata->on) || sdata->pos != 7) {
 		if (OswaldClk.day_first) {
-			oswald_write_character(2, 87, FONT_DROID8x12, 'x');
+			oswald_write_character(2, 86, FONT_6x9, 'x');
 		} else {
-			oswald_write_character(2, 87, FONT_DROID8x12, '_');
+			oswald_write_character(2, 86, FONT_6x9, '_');
 		}
 	}
 	oswald_write_string(15, 83, FONT_DROID8x12, "dd.mm.  mm/dd");
-- 
2.39.2