altos/stm32f1: Allow PA6 to be left alone in the SPI code

This is MISO, which the LCD driver doesn't use. Leave it alone so we
can use it for other stuff.

Signed-off-by: Keith Packard <keithp@keithp.com>

diff --git a/src/stm32f1/ao_spi_stm.c b/src/stm32f1/ao_spi_stm.c
index 20c189457440204436f25f6ee2e333cca71faa36..2c2fcd3a3b7bac8ff51ba6889a439c2ae8e36f5c 100644 (file)
--- a/src/stm32f1/ao_spi_stm.c
+++ b/src/stm32f1/ao_spi_stm.c
@@ -306,7 +306,9 @@ ao_spi_disable_pin_config(uint8_t spi_pin_config)
 #if SPI_1_PA5_PA6_PA7
        case AO_SPI_1_PA5_PA6_PA7:
                stm_spi_output_disable(&stm_gpioa, 5, SPI_1_MODE_OUTPUT);
+#ifndef SPI_1_PA6_DISABLE
                stm_spi_input_disable(&stm_gpioa, 6);
+#endif
                stm_spi_output_disable(&stm_gpioa, 7, SPI_1_MODE_OUTPUT);
                break;
 #endif
@@ -351,7 +353,9 @@ ao_spi_enable_pin_config(uint8_t spi_pin_config)
                                  STM_AFIO_MAPR_SPI1_REMAP_PA4_PA5_PA6_PA7,
                                  STM_AFIO_MAPR_SPI1_REMAP_MASK);
                stm_spi_output_enable(&stm_gpioa, 5, SPI_1_MODE_OUTPUT);
+#ifndef SPI_1_PA6_DISABLE
                stm_spi_input_enable(&stm_gpioa, 6);
+#endif
                stm_spi_output_enable(&stm_gpioa, 7, SPI_1_MODE_OUTPUT);
                break;
 #endif