diff options
| author | dzzxzz <[email protected]> | 2011-03-08 07:57:12 +0000 |
|---|---|---|
| committer | dzzxzz <[email protected]> | 2011-03-08 07:57:12 +0000 |
| commit | b2e2825fb85b20f1f26cff463517775c1903ef1b (patch) | |
| tree | dd28cd54e5cd20c70bea248222b1db34fd359630 | |
| parent | c4b51ff71877240d11773c63caf245a829a35e28 (diff) | |
add adc.c/adc.h to FM3 IAR project
git-svn-id: https://rt-thread.googlecode.com/svn/trunk@1318 bbd45198-f89e-11dd-88c7-29a3b14d5316
| -rw-r--r-- | bsp/fm3/adc.c | 116 | ||||
| -rw-r--r-- | bsp/fm3/adc.h | 32 |
2 files changed, 148 insertions, 0 deletions
diff --git a/bsp/fm3/adc.c b/bsp/fm3/adc.c new file mode 100644 index 0000000000..d167c3d1ea --- /dev/null +++ b/bsp/fm3/adc.c @@ -0,0 +1,116 @@ +/*
+ * File : adc.c
+ * This file is part of RT-Thread RTOS
+ * COPYRIGHT (C) 2011, RT-Thread Develop Team
+ *
+ * The license and distribution terms for this file may be
+ * found in the file LICENSE in this distribution or at
+ * http://www.rt-thread.org/license/LICENSE
+ *
+ * Change Logs:
+ * Date Author Notes
+ * 2011-03-03 lgnq
+ */
+
+#include <rtthread.h>
+#include <rthw.h>
+#include <rtgui/event.h>
+#include <rtgui/rtgui_server.h>
+#include <rtgui/rtgui_system.h>
+
+#include "mb9bf506r.h"
+#include "adc.h"
+
+static struct rt_device adc;
+
+static rt_err_t rt_adc_init(rt_device_t dev)
+{
+ RT_ASSERT(dev != RT_NULL);
+
+ if(!(dev->flag & RT_DEVICE_FLAG_ACTIVATED))
+ {
+ /* I/O setting AN08 - P18 */
+ FM3_GPIO->ADE |= 0x100;
+ FM3_GPIO->PFR1 = 0x100;
+
+ /* A/DC setting */
+ FM3_ADC0->SCIS1 = 0x01;
+ FM3_ADC0->ADSS1 = 0x00; /* sampling timming ADST0 */
+ FM3_ADC0->ADST1 = 0x43;
+ FM3_ADC0->ADCT = 0x02;
+ FM3_ADC0->SCCR = 0x10; /* FIFO clear,single mode */
+ FM3_ADC0->CMPCR = 0x00; /* disable comparator */
+
+ /* starting A/DC */
+ FM3_ADC0->SCCR |= 0x01; /* A/DC start */
+
+ dev->flag |= RT_DEVICE_FLAG_ACTIVATED;
+ }
+
+ return RT_EOK;
+}
+
+static rt_err_t rt_adc_control(rt_device_t dev, rt_uint8_t cmd, void *args)
+{
+ RT_ASSERT(dev != RT_NULL);
+
+ switch (cmd)
+ {
+ case RT_DEVICE_CTRL_ADC_START:
+ FM3_ADC0->SCCR |= 0x1;
+ break;
+
+ case RT_DEVICE_CTRL_ADC_RESULT:
+ while(FM3_ADC0->ADSR & 0x1)
+ ;
+ *((rt_uint16_t*)args) = FM3_ADC0->SCFD;
+ *((rt_uint16_t*)args) = *((rt_uint16_t*)args) >> 6;
+ *((rt_uint16_t*)args) = (*((rt_uint16_t*)args)*3300)/1024;
+ break;
+ }
+
+ return RT_EOK;
+}
+
+extern rt_thread_t info_tid;
+rt_uint16_t adc_value;
+static void adc_thread_entry(void *parameter)
+{
+ rt_device_t device;
+ struct rtgui_event_command ecmd;
+
+ RTGUI_EVENT_COMMAND_INIT(&ecmd);
+ ecmd.type = RTGUI_CMD_USER_INT;
+ ecmd.command_id = ADC_UPDATE;
+ device = rt_device_find("adc");
+ while(1)
+ {
+ rt_device_control(device, RT_DEVICE_CTRL_ADC_START, RT_NULL);
+ rt_device_control(device, RT_DEVICE_CTRL_ADC_RESULT, &adc_value);
+ rtgui_thread_send(info_tid, &ecmd.parent, sizeof(ecmd));
+ rt_thread_delay(20);
+ }
+}
+
+static rt_thread_t adc_thread;
+void rt_hw_adc_init(void)
+{
+ adc.type = RT_Device_Class_Char; /* fixme: should be adc type */
+ adc.rx_indicate = RT_NULL;
+ adc.tx_complete = RT_NULL;
+ adc.init = rt_adc_init;
+ adc.open = RT_NULL;
+ adc.close = RT_NULL;
+ adc.read = RT_NULL;
+ adc.write = RT_NULL;
+ adc.control = rt_adc_control;
+ adc.user_data = RT_NULL;
+
+ adc_thread = rt_thread_create("adc", adc_thread_entry, RT_NULL, 384, 29, 5);
+ if(adc_thread != RT_NULL)
+ rt_thread_startup(adc_thread);
+
+ /* register a character device */
+ rt_device_register(&adc, "adc", RT_DEVICE_FLAG_RDWR);
+}
+
diff --git a/bsp/fm3/adc.h b/bsp/fm3/adc.h new file mode 100644 index 0000000000..601a67619f --- /dev/null +++ b/bsp/fm3/adc.h @@ -0,0 +1,32 @@ +/*
+ * File : adc.c
+ * This file is part of RT-Thread RTOS
+ * COPYRIGHT (C) 2011, RT-Thread Develop Team
+ *
+ * The license and distribution terms for this file may be
+ * found in the file LICENSE in this distribution or at
+ * http://www.rt-thread.org/license/LICENSE
+ *
+ * Change Logs:
+ * Date Author Notes
+ * 2011-03-03 lgnq
+ */
+
+#ifndef __ADC_H__
+#define __ADC_H__
+
+/* Exported constants ---------------------------------------------------------*/
+/* Exported macro -------------------------------------------------------------*/
+#define ADC_MODE_SINGLE 0x00UL
+#define ADC_MODE_SCAN 0x01UL
+#define ADC_MODE_TAILGATE 0x02UL
+
+#define RT_DEVICE_CTRL_ADC_START 0xF1 /* start ADC conversion */
+#define RT_DEVICE_CTRL_ADC_RESULT 0xF2 /* get ADC result */
+
+#define ADC_UPDATE 0
+
+/* Exported functions --------------------------------------------------------- */
+void rt_hw_adc_init(void);
+
+#endif /*__ADC_H__ */
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