edge
test gpio and access low level arm registers
Dependencies: libmDot mbed-rtos mbed
Revision 0:111cba7b0520, committed 2016-05-26
- Comitter:
- boddeke
- Date:
- Thu May 26 09:04:10 2016 +0000
- Commit message:
- low level register access
Changed in this revision
diff -r 000000000000 -r 111cba7b0520 libmDot.lib --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/libmDot.lib Thu May 26 09:04:10 2016 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/teams/MultiTech/code/libmDot/#121e4c454964
diff -r 000000000000 -r 111cba7b0520 main.cpp
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Thu May 26 09:04:10 2016 +0000
@@ -0,0 +1,71 @@
+#include "mbed.h"
+#include "rtos.h"
+#include "mDot.h"
+
+
+#define GPIO_PORT PA_0
+
+RawSerial pc(PA_2,NC);
+
+// results:
+// default pullup pulldown pullnone open drain
+// battery + close 0.00 0.00 0.00 0.00 0.00
+// battery + open 1.55 3.01 0.01 drifting drifting
+// mdk + open 0.00 0.00 0.00 0.00 0.00
+// mdk + close 3.30 3.21 2.26 3.12 3.30
+//
+// conclusion: mdk has something connected to PA_0
+
+// https://developer.mbed.org/users/n0tform3/code/HelloWorld_IKS01A1/docs/1c6281289d67/stm32f4xx_8h_source.html
+
+
+void print_gpio_pa0_config(void) {
+
+ pc.printf("MODER %x\r\n",GPIOA->MODER&0x3);
+ pc.printf("OTYPER %x\r\n",GPIOA->OTYPER&0x1);
+ pc.printf("OSPEEDR %x\r\n",GPIOA->OSPEEDR&0x3);
+ pc.printf("PUPDR %x\r\n",GPIOA->PUPDR&0x3);
+ pc.printf("IDR %x\r\n",GPIOA->IDR&0x1);
+ pc.printf("ODR %x\r\n",GPIOA->ODR&0x1);
+ pc.printf("BSRR %x\r\n",GPIOA->BSRR&0x1);
+ pc.printf("LCKR %x\r\n",GPIOA->LCKR&0x1);
+ pc.printf("AFR[0] %x\r\n",GPIOA->AFR[0]&0xf);
+}
+
+main() {
+
+ pc.baud(115200);
+
+ pc.printf("Build: " __DATE__ ", " __TIME__"\r\n");
+
+ DigitalIn gpio_sensor(GPIO_PORT);
+ pc.printf("pin mode: default\r\n");
+ print_gpio_pa0_config();
+ wait(10);
+
+ // uint32_t lock = GPIOA->LCKR;
+ // pc.printf("Read %x\r\n",lock);
+
+ while(1) {
+
+ gpio_sensor.mode(PullUp);
+ pc.printf("pin mode: pullup\r\n");
+ print_gpio_pa0_config();
+ wait(10);
+
+ gpio_sensor.mode(PullDown);
+ pc.printf("pin mode: pulldown\r\n");
+ print_gpio_pa0_config();
+ wait(10);
+
+ gpio_sensor.mode(PullNone);
+ pc.printf("pin mode: pullnone\r\n");
+ print_gpio_pa0_config();
+ wait(10);
+
+ gpio_sensor.mode(OpenDrain);
+ pc.printf("pin mode: opendrain\r\n");
+ print_gpio_pa0_config();
+ wait(10);
+ }
+}
\ No newline at end of file
diff -r 000000000000 -r 111cba7b0520 mbed-rtos.lib --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed-rtos.lib Thu May 26 09:04:10 2016 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/mbed_official/code/mbed-rtos/#4c105b8d7cae
diff -r 000000000000 -r 111cba7b0520 mbed.bld --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed.bld Thu May 26 09:04:10 2016 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/mbed_official/code/mbed/builds/7c328cabac7e \ No newline at end of file