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[RZ_A1H]Modify frequency setting processing of SPI #817

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Merged
merged 1 commit into from
Jan 2, 2015
Merged

[RZ_A1H]Modify frequency setting processing of SPI #817

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6 changes: 5 additions & 1 deletion libraries/mbed/targets/hal/TARGET_RENESAS/TARGET_RZ_A1H/spi_api.c
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Original file line number Diff line number Diff line change
Expand Up @@ -169,6 +169,8 @@ void spi_frequency(spi_t *obj, int hz) {
uint32_t pclk_base;
uint32_t div;
uint32_t brdv = 0;
uint32_t hz_max;
uint32_t hz_min;
uint16_t mask = 0x000c;

/* set PCLK */
Expand All @@ -178,7 +180,9 @@ void spi_frequency(spi_t *obj, int hz) {
pclk_base = CM0_RENESAS_RZ_A1_P1_CLK;
}

if ((hz < (pclk_base / 2 / 256 / 8)) || (hz > (pclk_base / 2))) {
hz_min = pclk_base / 2 / 256 / 8;
hz_max = pclk_base / 2;
if ((hz < hz_min) || (hz > hz_max)) {
error("Couldn't setup requested SPI frequency");
return;
}
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