diff options
Diffstat (limited to 'src/usbh_driver_ac_midi.c')
| -rw-r--r-- | src/usbh_driver_ac_midi.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/src/usbh_driver_ac_midi.c b/src/usbh_driver_ac_midi.c index 0a747f7..9d139d5 100644 --- a/src/usbh_driver_ac_midi.c +++ b/src/usbh_driver_ac_midi.c @@ -24,6 +24,8 @@ #include "usbh_driver_ac_midi_private.h" #include "usart_helpers.h" +#include <stddef.h> + #include <libopencm3/usb/midi.h> #include <libopencm3/usb/audio.h> #include <libopencm3/usb/usbstd.h> @@ -35,7 +37,7 @@ static void poll(void *drvdata, uint32_t tflp); static void remove(void *drvdata); static midi_device_t midi_device[USBH_AC_MIDI_MAX_DEVICES]; -static const midi_config_t *midi_config = 0; +static const midi_config_t *midi_config = NULL; static bool initialized = false; static const usbh_dev_driver_info_t usbh_midi_driver_info = { @@ -77,7 +79,7 @@ static void *init(void *usbh_dev) return 0; } uint32_t i; - midi_device_t *drvdata = 0; + midi_device_t *drvdata = NULL; // find free data space for midi device for (i = 0; i < USBH_AC_MIDI_MAX_DEVICES; i++) { @@ -89,7 +91,7 @@ static void *init(void *usbh_dev) drvdata->endpoint_in_toggle = 0; drvdata->endpoint_out_toggle = 0; drvdata->usbh_device = usbh_dev; - drvdata->write_callback_user = 0; + drvdata->write_callback_user = NULL; drvdata->sending = false; break; } |