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SGPIO: Change bus direction more deliberately.

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There may have been an instant where the CPLD and SGPIO were driving the bus simultaneously, when switching from TX to RX.
This commit is contained in:
Jared Boone 2016-08-13 16:42:39 -07:00
parent 2ec1bab5d5
commit 62d2ae2336
1 changed files with 6 additions and 1 deletions
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7
firmware/common/baseband_sgpio.cpp
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@ -299,7 +299,9 @@ void SGPIO::configure(const Direction direction) {
disable_all_slice_counters();
LPC_SGPIO->GPIO_OUTREG = gpio_outreg(direction);
LPC_SGPIO->GPIO_OENREG = gpio_oenreg(direction);
// Set data pins as input, temporarily.
LPC_SGPIO->GPIO_OENREG = gpio_oenreg(Direction::Receive);
LPC_SGPIO->OUT_MUX_CFG[ 8] = out_mux_cfg(P_OUT_CFG::DOUT_DOUTM1, P_OE_CFG::GPIO_OE);
LPC_SGPIO->OUT_MUX_CFG[ 9] = out_mux_cfg(P_OUT_CFG::DOUT_DOUTM1, P_OE_CFG::GPIO_OE);
LPC_SGPIO->OUT_MUX_CFG[10] = out_mux_cfg(P_OUT_CFG::GPIO_OUT, P_OE_CFG::GPIO_OE);
@ -314,6 +316,9 @@ void SGPIO::configure(const Direction direction) {
LPC_SGPIO->OUT_MUX_CFG[i] = data_out_mux_cfg;
}
// Now that output enable sources are set, enable data bus in correct direction.
LPC_SGPIO->GPIO_OENREG = gpio_oenreg(direction);
const auto slice_gpdma = Slice::H;
const size_t slice_count = slice_mode_multislice ? 8 : 1;