Fix a bug in U8G2 HAL SPI initialize

aodzip · web-flow · commit de865db4af61 · 2018-09-23T15:29:21.000+08:00
if we don't set bus_config to all zero, a wrong bus_config.flag may have some random bug
diff --git a/hardware/displays/U8G2/u8g2_esp32_hal.c b/hardware/displays/U8G2/u8g2_esp32_hal.c
@@ -47,6 +47,7 @@ uint8_t u8g2_esp32_spi_byte_cb(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void
 			}
 
 		  spi_bus_config_t bus_config;
+                  memset(&bus_config, 0, sizeof(spi_bus_config_t));
 		  bus_config.sclk_io_num   = u8g2_esp32_hal.clk; // CLK
 		  bus_config.mosi_io_num   = u8g2_esp32_hal.mosi; // MOSI
 		  bus_config.miso_io_num   = -1; // MISO

Original file line number	Diff line number	Diff line change
`@@ -47,6 +47,7 @@ uint8_t u8g2_esp32_spi_byte_cb(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void`
`47`	`47`	`}`
`48`	`48`
`49`	`49`	`spi_bus_config_t bus_config;`
	`50`	`+ memset(&bus_config, 0, sizeof(spi_bus_config_t));`
`50`	`51`	`bus_config.sclk_io_num = u8g2_esp32_hal.clk; // CLK`
`51`	`52`	`bus_config.mosi_io_num = u8g2_esp32_hal.mosi; // MOSI`
`52`	`53`	`bus_config.miso_io_num = -1; // MISO`