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Diffstat (limited to 'main.cpp')
-rw-r--r--main.cpp53
1 files changed, 52 insertions, 1 deletions
diff --git a/main.cpp b/main.cpp
index 1ec89a6..fbc3e23 100644
--- a/main.cpp
+++ b/main.cpp
@@ -9,9 +9,12 @@
#include <usb/descriptor.h>
auto dev_desc = device_desc(0x200, 0, 0, 0, 64, 0x1d50, 0x60f8, 0, 0, 0, 0, 1);
-auto conf_desc = configuration_desc(1, 1, 0, 0xc0, 0,
+auto conf_desc = configuration_desc(2, 1, 0, 0xc0, 0,
interface_desc(1, 0, 1, 0xff, 0x00, 0x00, 0,
endpoint_desc(0x81, 0x02, 64, 0)
+ ),
+ interface_desc(2, 0, 1, 0xff, 0x00, 0x00, 0,
+ endpoint_desc(0x82, 0x03, 64, 0)
)
);
@@ -30,6 +33,9 @@ Pin nfc_irq_in = GPIOC[13];
Pin button = GPIOA[3];
Pin led = GPIOA[4];
+PinArray kp_rows = GPIOB.array(12, 15);
+PinArray kp_cols = GPIOA.array(8, 10);
+
class CR95HF {
private:
SPI_t& spi;
@@ -99,6 +105,25 @@ class USB_NFC : public USB_class_driver {
USB_NFC usb_nfc(usb);
+class USB_keypad : public USB_class_driver {
+ private:
+ USB_generic& usb;
+
+ public:
+ USB_keypad(USB_generic& usbd) : usb(usbd) {
+ usb.register_driver(this);
+ }
+
+ protected:
+ virtual void handle_set_configuration(uint8_t configuration) {
+ if(configuration) {
+ usb.hw_conf_ep(0x82, EPType::Interrupt, 64);
+ }
+ }
+};
+
+USB_keypad usb_keypad(usb);
+
int main() {
rcc_init();
@@ -156,6 +181,14 @@ int main() {
cr95hf.send_cmd(0x02, 2, (uint8_t*)"\x01\x05"); // Select ISO 15693
cr95hf.get_response(64, buf);
+ kp_cols.set_mode(Pin::Input);
+ kp_cols.set_pull(Pin::PullUp);
+
+ kp_rows.set_type(Pin::OpenDrain);
+ kp_rows.set_mode(Pin::Output);
+
+ uint32_t kp_last = 0;
+
while(1) {
if(Time::time() < nfc_delay_until) {
// Just do nothing.
@@ -187,6 +220,24 @@ int main() {
}
}
+ uint32_t kp_state = 0;
+
+ for(int i = 0; i < 4; i++) {
+ kp_rows.set(~(1 << i));
+ asm volatile("dmb");
+ asm volatile("nop");
+ asm volatile("nop");
+ asm volatile("nop");
+ asm volatile("nop");
+ kp_state |= ((~kp_cols.get()) & 0x7) << (i * 3);
+ }
+
+ if(kp_state != kp_last && usb.ep_ready(2)) {
+ usb.write(2, &kp_state, 2);
+ kp_last = kp_state;
+ }
+
+
usb.process();
}
}