Merge pull request #557 from toyowata/master

0xc0170 · 0xc0170 · commit 7e29ffcd56b7 · 2014-10-13T11:05:39.000+02:00
HAL: LPC824 - Correct SPI delay value
diff --git a/libraries/mbed/targets/hal/TARGET_NXP/TARGET_LPC82X/spi_api.c b/libraries/mbed/targets/hal/TARGET_NXP/TARGET_LPC82X/spi_api.c
@@ -110,6 +110,7 @@ void spi_init(spi_t *obj, PinName mosi, PinName miso, PinName sclk, PinName ssel
         spi_format(obj, 8, 0, 1);  // 8 bits, mode 0, slave
     }
     spi_frequency(obj, 1000000);
+    obj->spi->DLY = 2;             // 2 SPI clock times pre-delay
 
     // enable the ssp channel
     ssp_enable(obj);
@@ -139,7 +140,6 @@ void spi_frequency(spi_t *obj, int hz)
 
     // rise DIV value if it cannot be divided
     obj->spi->DIV = (SystemCoreClock + (hz - 1))/hz - 1;
-    obj->spi->DLY = 0;
 
     ssp_enable(obj);
 }

Original file line number	Diff line number	Diff line change
`@@ -110,6 +110,7 @@ void spi_init(spi_t *obj, PinName mosi, PinName miso, PinName sclk, PinName ssel`
`110`	`110`	`spi_format(obj, 8, 0, 1); // 8 bits, mode 0, slave`
`111`	`111`	`}`
`112`	`112`	`spi_frequency(obj, 1000000);`
	`113`	`+ obj->spi->DLY = 2; // 2 SPI clock times pre-delay`
`113`	`114`
`114`	`115`	`// enable the ssp channel`
`115`	`116`	`ssp_enable(obj);`
`@@ -139,7 +140,6 @@ void spi_frequency(spi_t *obj, int hz)`
`139`	`140`
`140`	`141`	`// rise DIV value if it cannot be divided`
`141`	`142`	`obj->spi->DIV = (SystemCoreClock + (hz - 1))/hz - 1;`
`142`		`- obj->spi->DLY = 0;`
`143`	`143`
`144`	`144`	`ssp_enable(obj);`
`145`	`145`	`}`