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check epd pointer

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This commit is contained in:
Shuanglei Tao
2026-03-09 11:03:10 +08:00
parent 9621a2ced2
commit 4bf01c6301
1 changed files with 13 additions and 6 deletions
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19
EPD/EPD_service.c
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@@ -54,6 +54,8 @@ static void epd_gui_update(void* p_event_data, uint16_t event_size) {
DrawGUI(&data, (buffer_callback)epd->drv->write_image, epd);
epd->drv->refresh(epd);
epd->drv->sleep(epd);
nrf_delay_ms(200); // for sleep
EPD_GPIO_Uninit();
app_feed_wdt();
@@ -77,8 +79,10 @@ static void on_connect(ble_epd_t* p_epd, ble_evt_t* p_ble_evt) {
static void on_disconnect(ble_epd_t* p_epd, ble_evt_t* p_ble_evt) {
UNUSED_PARAMETER(p_ble_evt);
p_epd->conn_handle = BLE_CONN_HANDLE_INVALID;
p_epd->epd->drv->sleep(p_epd->epd);
nrf_delay_ms(200); // for sleep
if (p_epd->epd) {
p_epd->epd->drv->sleep(p_epd->epd);
nrf_delay_ms(200); // for sleep
}
EPD_GPIO_Uninit();
}
@@ -137,7 +141,10 @@ static void epd_service_on_write(ble_epd_t* p_epd, uint8_t* p_data, uint16_t len
case EPD_CMD_CLEAR:
epd_update_display_mode(p_epd, MODE_PICTURE);
p_epd->epd->drv->clear(p_epd->epd, length > 1 ? p_data[1] : true);
if (p_epd->epd) {
p_epd->epd->drv->init(p_epd->epd);
p_epd->epd->drv->clear(p_epd->epd, length > 1 ? p_data[1] : true);
}
break;
case EPD_CMD_SEND_COMMAND:
@@ -151,11 +158,11 @@ static void epd_service_on_write(ble_epd_t* p_epd, uint8_t* p_data, uint16_t len
case EPD_CMD_REFRESH:
epd_update_display_mode(p_epd, MODE_PICTURE);
p_epd->epd->drv->refresh(p_epd->epd);
if (p_epd->epd) p_epd->epd->drv->refresh(p_epd->epd);
break;
case EPD_CMD_SLEEP:
p_epd->epd->drv->sleep(p_epd->epd);
if (p_epd->epd) p_epd->epd->drv->sleep(p_epd->epd);
break;
case EPD_CMD_SET_TIME: {
@@ -181,7 +188,7 @@ static void epd_service_on_write(ble_epd_t* p_epd, uint8_t* p_data, uint16_t len
case EPD_CMD_WRITE_IMAGE: // MSB=0000: ram begin, LSB=1111: black
if (length < 3) return;
p_epd->epd->drv->write_ram(p_epd->epd, p_data[1], &p_data[2], length - 2);
if (p_epd->epd) p_epd->epd->drv->write_ram(p_epd->epd, p_data[1], &p_data[2], length - 2);
break;
case EPD_CMD_SET_CONFIG: